What's the realistic all-in monthly TCO for a mid-market Shopify Plus merchant running a minimal app stack (just email and reviews) versus one running 15+ apps?
No published figure exists. Here is the honest answer.
App-stack weight changes a Plus merchant's bill by the sum of the apps, and no published benchmark gives that sum. App Store prices are entry prices: Klaviyo lists $20 per month for 251 to 500 contacts, and Gorgias charges $900 per month for 5,000 tickets plus $36 per additional 100 (App Store listings, September 2026).
Why the App Store price is not your price
Every app in a mid-market stack is metered on something that scales with your business, and the published tier is the bottom of the ladder. Two live examples, both from the vendors' own Shopify listings in September 2026:
| App | What the listing publishes | What a mid-market store actually sits on |
|---|---|---|
| Klaviyo: Email Marketing & SMS | Free to 250 contacts; Email $20/month for 251 to 500 contacts, "pricing scales with growth"; SMS $15/month for 1,250 credits | Not published on the listing. Contact-count pricing at 100,000-plus profiles is off the ladder shown |
| Gorgias: AI, Helpdesk & Chat | Starter $10 (50 tickets, $0.40 each after); Basic $60 (300 tickets); Pro $360 (2,000 tickets); Advanced $900 (5,000 tickets, $36 per additional 100) | Advanced plus overages, and the overage is set by order volume, not by app count |
The Klaviyo row is the trap. A listing that says "$20/month" and "pricing scales with growth" is publishing a starting price and a disclaimer. It is not a figure you can put in a model.
So what can be said honestly about the delta
Three things, all of them structural.
- The delta is the sum of the apps, and it is knowable only from your own invoices. There is no published benchmark for "15 apps at mid-market scale" and every circulating figure is modelled from tier pricing rather than billed amounts. Wave 1 of this hub reached the same conclusion on app overspend and declined to publish a benchmark; nothing has changed since.
- Two of the fifteen apps are most of the money. Metered apps (email, helpdesk, search, subscriptions, personalization) price on volume. Utility apps (a size chart, a back-in-stock notifier, a currency switcher) price flat and cheap. A "15 apps" stack and a "5 apps" stack can cost the same if the metered two are in both.
- Overages are a separate line from subscriptions and they move independently. Gorgias's $36 per 100 tickets rises with order volume even if you never install another app. A stack audit that counts subscriptions and ignores overages will report a flat cost base that is not flat.
The audit that produces your real number, in one afternoon
- Export twelve months of app charges from your Shopify invoices, not from the App Store. Shopify bills app charges, so the record exists.
- Sort descending. Draw a line under the top five. For most mid-market stacks that top five is 70% or more of the total, and the rest is noise you should stop discussing.
- For each of the top five, find the metered unit (contacts, tickets, orders, searches, sessions) and its current consumption against the allowance.
- Mark each app as overlapping, redundant, or load-bearing. Only redundant apps are cancellable this month. Overlapping apps are a consolidation project with a migration cost.
- Subtract the cancellable total. That is your real delta, and it belongs to your store rather than to a benchmark.
Where the real cost of a heavy stack actually sits
Not in the subscriptions. In the integration surface: every app that writes to orders, customers or the theme is a thing that can break at checkout, a thing that needs re-testing after a theme update, and a thing somebody has to own. That cost has no invoice and no published rate, which is exactly why it is missing from every comparison including the ones that quote a total.
When NOT to consolidate
- When the overlapping apps are load-bearing for different teams. Two tools doing 60% the same thing for two teams with different workflows is a change-management project, not a cost saving.
- Mid-season. App migrations in Q4 are how a flat cost base becomes an outage.
- Before step 3. Cancelling a cheap app while a metered app sits three times over its allowance is motion, not progress.
The Deploi point of view
Our own position, from building on Shopify. Separate from the facts above.
- Our take: We scored app-stack consolidation CUSTOMIZE rather than BUY precisely because the saving is store-specific and the benchmark is not available (Deploi verdict, September 2026). Buy the audit, not the number.
- What we’ve seen: The top five apps by spend are almost never the top five by perceived importance inside the business, and showing a team that ranked list is usually the most valuable ten minutes of a cost audit.
- Where we disagree: The standard content in this category publishes two totals, a minimal stack and a heavy stack, and reports the gap. Both totals are built from entry-tier App Store prices that no mid-market merchant pays. The gap between two wrong numbers is not a finding.
- What this page adds: that App Store listings publish entry prices with usage overages attached, so the app side of the parent's model cannot be sourced from app pages at all, and has to come from Shopify's own invoices.
Reviewed by Martin Dejnicki, Director of SEO & AI Search. Facts verified 2026-09-14.
Where we worked this out
Our decision records