# Does GemPages' funnel builder support upsell/cross-sell offers natively, or do I still need a separate app like Rebuy?

Reviewed by Martin Dejnicki, Director of SEO & AI Search · facts verified October 9, 2026 · canonical: https://deploi.ca/shopify/faq/gempages-native-upsells-vs-rebuy

## Short answer

GemPages' funnel builder supports upsells natively only after payment, with up to two offers; its funnel has no cart step and leaves checkout to Shopify ([GemPages Help Center](https://help.gempages.net/articles/v7-gempages-sales-funnel), October 2026). So a store that cross-sells in the cart still needs an app like Rebuy. Shopify allows only one post-purchase app at a time ([Shopify Help Center](https://help.shopify.com/en/manual/checkout-settings/customize-checkout-configurations/checkout-apps), October 2026).

- **GemPages' native offer surface:** Post-purchase page, up to two offers. Free and Build cap upsell revenue at $100 a month; Optimize pays $10 per $1,000 past $1,000 a month; Enterprise pays none per GemPages' help center, but its Sales Funnel Builder page lists it under the fee (October 2026) ([GemPages Help Center, GemPages Sales Funnel & FAQs](https://help.gempages.net/articles/v7-gempages-sales-funnel); [GemPages, Shopify Sales Funnel Builder](https://gempages.net/pages/sales-funnel-builder))
- **Post-purchase apps per store:** One at a time. Shopify runs post-purchase apps on the Basic plan and higher, one checkout app at a time (Shopify Help Center, October 2026) ([Shopify Help Center, Customizing your checkout and customer accounts with apps](https://help.shopify.com/en/manual/checkout-settings/customize-checkout-configurations/checkout-apps))
- **Checkouts that skip the offer:** Named wallets, installments and gift cards. Shopify names Klarna, Affirm, AfterPay, Apple Pay, Amazon Pay and Google Pay, and skips orders with duties and multiple currencies (shopify.dev, October 2026) ([Shopify developer docs, About product offers](https://shopify.dev/docs/apps/build/checkout/product-offers))
- **Enterprise beats Optimize:** Above $15,000 of upsell revenue a month. Optimize's $59 plus commission passes Enterprise's $199 there, if Enterprise stays commission-free as GemPages' help center says (Deploi arithmetic from the figures above) (Deploi arithmetic)

## Deploi's call

GemPages does not replace a merchandising engine, and it was not built to. It replaces a single-purpose post-purchase upsell app for a brand that runs simple offers. That is a real saving and a narrow one (Deploi position, October 2026).

**BUY: Use GemPages as your only post-purchase app when**

- Post-purchase offers are your whole upsell program, and card checkouts dominate.
- Two rule-based offers after payment are enough; [Deploi's post-purchase upsell record](https://deploi.ca/shopify/build-vs-buy/post-purchase-upsell) scores renting the offer-testing loop BUY while offers are still in testing (October 2026).
- Monthly upsell revenue stays under $15,000 on Optimize, or GemPages confirms in writing that Enterprise pays no commission (Deploi arithmetic from GemPages' published fees).

**BUY: Add an upsell app such as Rebuy when**

- Cart or product-page cross-sells move your order value, and GemPages' funnel never reaches the cart.
- You want recommendations learned from shopper behavior rather than set by rules.
- You're on Plus and want offers inside checkout, which Rebuy sells as "Shopify Plus exclusive" ([Rebuy](https://www.rebuyengine.com/pricing), October 2026).

## Which upsell surfaces does GemPages cover natively, and which need an app like Rebuy?

GemPages covers the post-purchase page natively and part of the product page; the cart and the checkout need an app like Rebuy. GemPages' funnel runs pre-sale and sales pages into Shopify's default checkout, then makes its offers after payment ([GemPages Help Center](https://help.gempages.net/articles/v7-gempages-sales-funnel), October 2026). [What GemPages is and how its funnel differs from PageFly and Shogun](https://deploi.ca/shopify/faq/gempages-vs-pagefly-and-shogun) is covered in its own answer.

**GemPages covers the post-purchase page and part of the product page; Rebuy covers all four surfaces, the checkout on Plus only**

| Surface | GemPages | Rebuy Personalization Engine |
| --- | --- | --- |
| Product page | Quantity-break bundle discounts on paid plans; related products by collection, vendor or tag | AI recommendations, bundles and cross-sell widgets |
| Cart | None: GemPages can't edit the cart page, and a cart drawer comes from the theme or an app | Smart Cart, a slide-out cart with recommendations |
| Checkout steps | None: GemPages says an upsell offer can't show on the checkout page | Checkout extension offers, Shopify Plus only |
| Post-purchase page | Up to two offers after payment; GemPages' FAQ also says up to three can display | Post-Purchase Offers |

Sources: [GemPages Help Center, GemPages Sales Funnel & FAQs](https://help.gempages.net/articles/v7-gempages-sales-funnel); [GemPages Help Center, Bundle Discount Element](https://help.gempages.net/articles/bundle-discount); [GemPages Help Center, Related Products Element](https://help.gempages.net/articles/v7-related-products-element); [GemPages Help Center, How to Set Up a Shopify Cart Drawer with GemPages](https://help.gempages.net/articles/how-to-set-up-cart-drawer); [Rebuy, Rebuy Personalization Engine on the Shopify App Store](https://apps.shopify.com/rebuy); [Rebuy, Rebuy Engine Pricing](https://www.rebuyengine.com/pricing). Verified October 9, 2026.

So GemPages replaces Rebuy only where post-purchase offers are the whole upsell program.

## Which checkouts never see a post-purchase offer?

Checkouts paid through an installment service, a wallet such as Apple Pay, Google Pay or Amazon Pay, or a gift card never see a post-purchase offer, from GemPages or any other app. Shopify skips the page when a customer pays with "an installment service or a wallet service (such as Klarna, Affirm, AfterPay, Apple Pay, Amazon Pay, or Google Pay)" ([shopify.dev](https://shopify.dev/docs/apps/build/checkout/product-offers), October 2026). Shopify also skips gift card payments, "orders with duties and multiple currencies", local delivery orders and orders outside the Online Store channel. So an international brand loses part of its order base to the rule before any offer is designed.

> **GemPages and Shopify disagree on Shop Pay and PayPal Express**
> - GemPages lists Shop Pay and PayPal Express Checkout as supported for its post-purchase offers ([GemPages Help Center](https://help.gempages.net/articles/post-purchase-supported-payment-methods), October 2026).
> - Shopify skips the post-purchase page for "any payment method other than a credit card" ([shopify.dev](https://shopify.dev/docs/apps/build/checkout/product-offers), October 2026), which would include PayPal Express.
> - GemPages' own funnel guide says offers run "not through accelerated checkouts like Shop Pay" ([GemPages Help Center](https://help.gempages.net/articles/v7-gempages-sales-funnel), October 2026). Shopify's list of skipped wallets does not name Shop Pay.
> - GemPages says Shopify gives no way to test a live store's post-purchase page without a real transaction, so it tests with a live $1 order ([GemPages Help Center](https://help.gempages.net/articles/testing-sales-funnels-upsell-shopify-orders), October 2026). Run one on each payment method you take; [the payment-method axis of a checkout test matrix](https://deploi.ca/shopify/faq/checkout-qa-budget-percent-of-dev-time) lists them.

## Can GemPages and Rebuy run on the same store?

GemPages and Rebuy can run on the same store only on different surfaces, because Shopify allows one post-purchase app. Shopify's rule reads: "You can use only one checkout app to add post-purchase features at a time" ([Shopify Help Center](https://help.shopify.com/en/manual/checkout-settings/customize-checkout-configurations/checkout-apps), October 2026). So one workable split puts Rebuy in the cart and on product pages and leaves the post-purchase page to GemPages. The other uses Rebuy's Checkout & Post-Purchase package and switches GemPages' funnel off.

GemPages sells its funnel with "No extra apps required!" ([GemPages](https://gempages.net/pages/sales-funnel-builder), October 2026). Its own testing guide is less absolute: "To maximize results, you can combine GemPages with a one-click upsell app for Shopify" ([GemPages Help Center](https://help.gempages.net/articles/testing-sales-funnels-upsell-shopify-orders), October 2026). Rebuy Personalization Engine rates 4.7 stars across about 850 reviews on the Shopify App Store ([Shopify App Store](https://apps.shopify.com/rebuy), October 2026). [Whether a recommendation engine lifts order value enough to pay for itself](https://deploi.ca/shopify/faq/ai-product-recommendations-aov-lift) is its own answer.

## What does GemPages' post-purchase funnel cost against Rebuy?

GemPages' post-purchase funnel costs a commission on upsell revenue, while Rebuy costs a fee per package that scales with order count. GemPages' Optimize plan, $59 a month, charges "a fee of $10" for "every incremental $1,000" of upsell revenue past the first $1,000 each month. GemPages' help center says Enterprise, $199 a month, charges none, and that the commission is "non-refundable, regardless of any refund requests made by customers" ([GemPages Help Center](https://help.gempages.net/articles/v7-gempages-sales-funnel), October 2026).

**Optimize's plan fee plus commission passes Enterprise's $199 once upsell revenue tops $15,000 a month (Deploi arithmetic from GemPages' published fees)**

| Post-purchase upsell revenue a month | Optimize: plan plus commission | Enterprise |
| --- | --- | --- |
| $1,000 | $59 | $199 |
| $5,000 | $99 | $199 |
| $15,000 | $199 | $199 |
| $50,000 | $549 | $199 |

Sources: [GemPages Help Center, GemPages Sales Funnel & FAQs](https://help.gempages.net/articles/v7-gempages-sales-funnel). Verified October 9, 2026.

> **GemPages' pages disagree on Enterprise's commission**
> GemPages' help center says Enterprise pays "No commission fee, forever" ([GemPages Help Center](https://help.gempages.net/articles/v7-gempages-sales-funnel), October 2026), but its Sales Funnel Builder page lists "Optimize and Enterprise Plans" under the same $10 fee ([GemPages](https://gempages.net/pages/sales-funnel-builder), October 2026). So get Enterprise's terms in writing before the flat fee decides your plan.

Rebuy prices each package by monthly orders, from $25 a month for one package ([Rebuy](https://www.rebuyengine.com/pricing), October 2026). So Rebuy's bill follows order count, and GemPages' bill follows offer revenue. Check either app's claims against Shopify's orders, because third-party pixels "report only the purchase event and value for the initial purchase" ([shopify.dev](https://shopify.dev/docs/apps/build/checkout/product-offers), October 2026).

## When is GemPages' funnel enough without a separate upsell app?

GemPages' funnel is enough without a separate upsell app when post-purchase offers are your whole upsell program and card checkouts dominate.

> **When GemPages' funnel is not enough on its own**
> - **The cart is where your order value moves.** GemPages can't edit the cart page, so cart offers need the theme or an app ([GemPages Help Center](https://help.gempages.net/articles/how-to-set-up-cart-drawer), October 2026).
> - **You want learned recommendations.** GemPages' dynamic offers pick products by rules such as collection, price or the order's most expensive item ([GemPages Help Center](https://help.gempages.net/articles/sales-funnel-dynamic-offer), October 2026).
> - **Apple Pay, Google Pay, installments or gift cards carry many of your checkouts.** Those orders never reach Shopify's post-purchase page.
> - **You already pay for Rebuy's Checkout & Post-Purchase package.** Shopify allows one post-purchase app, so choose one before you build offers in both.

## Deploi's point of view

**What we've seen.** Post-purchase offer performance is usually reported without the denominator. The offer converts well among the customers who saw it, and the report rarely says how many orders never reached the page.

**Where we disagree.** "No extra apps required" is the standard claim for bundled funnel features across this category, and it is true only for the surface the builder happens to own. The useful question is never how many apps you can remove. It is which of the four surfaces actually moves your average order value, and then which product owns that one.

**What we ask for first.** Offer impressions as a share of orders, before anyone celebrates a conversion rate. In our judgment, the orders that skip the post-purchase page are where these business cases go wrong.

**What this page adds.** The parent says GemPages' funnel ends in a post-purchase offer; this page maps all four upsell surfaces against Rebuy, the Shopify rules that skip the post-purchase page or allow one app on it, the disagreement between GemPages and Shopify on Shop Pay and PayPal Express, and where Optimize's commission passes Enterprise's flat fee.

## When this answer changes

- GemPages changes its post-purchase commission, or the $100 monthly cap on Free and Build.
- GemPages or Shopify changes its list of payment methods that reach the post-purchase page.
- Shopify allows more than one post-purchase app, or takes post-purchase extensions out of beta.
- GemPages adds cart or checkout offers to its funnel.
- Rebuy changes how it prices its packages.

## Sources

1. [GemPages Help Center, GemPages Sales Funnel & FAQs](https://help.gempages.net/articles/v7-gempages-sales-funnel), checked October 9, 2026
2. [Shopify Help Center, Customizing your checkout and customer accounts with apps](https://help.shopify.com/en/manual/checkout-settings/customize-checkout-configurations/checkout-apps), checked October 9, 2026
3. [Shopify developer docs, About product offers](https://shopify.dev/docs/apps/build/checkout/product-offers), checked October 9, 2026
4. [GemPages Help Center, GemPages One-Click Post-Purchase: Supported Payment Methods](https://help.gempages.net/articles/post-purchase-supported-payment-methods), checked October 9, 2026
5. [GemPages Help Center, Bundle Discount Element](https://help.gempages.net/articles/bundle-discount), checked October 9, 2026
6. [GemPages Help Center, Related Products Element](https://help.gempages.net/articles/v7-related-products-element), checked October 9, 2026
7. [GemPages Help Center, How to Set Up a Shopify Cart Drawer with GemPages](https://help.gempages.net/articles/how-to-set-up-cart-drawer), checked October 9, 2026
8. [GemPages Help Center, Sales Funnel Dynamic Offer](https://help.gempages.net/articles/sales-funnel-dynamic-offer), checked October 9, 2026
9. [GemPages Help Center, Testing GemPages Upsell Sales Funnel with Shopify Orders & $1 Product](https://help.gempages.net/articles/testing-sales-funnels-upsell-shopify-orders), checked October 9, 2026
10. [Rebuy, Rebuy Personalization Engine on the Shopify App Store](https://apps.shopify.com/rebuy), checked October 9, 2026
11. [Rebuy, Rebuy Engine Pricing](https://www.rebuyengine.com/pricing), checked October 9, 2026
12. [GemPages, Shopify Sales Funnel Builder](https://gempages.net/pages/sales-funnel-builder), checked October 9, 2026
13. [Deploi Build vs. Buy, Should You Build or Buy Post-Purchase Upsells on Shopify?](https://deploi.ca/shopify/build-vs-buy/post-purchase-upsell), checked October 9, 2026, Deploi research