Shopify vs Custom Ecommerce: 3-Year Math Nobody Shows You

“$39 a month” is the number on Shopify’s pricing page. It’s also a number almost nobody actually pays. By the time a real store is running — reviews, email marketing, an SEO app, a page builder, maybe a subscription tool — the monthly bill is usually five to twenty times that, and it climbs every year the store grows. A custom build looks expensive by comparison on day one: several thousand dollars before the site even launches. That scares off some stores that would genuinely save money by switching, and pulls in a few that would genuinely be better off staying put.

Here’s the math, run three ways, with real numbers instead of vague warnings about “hidden costs.” None of the three scenarios below is hypothetical — they’re the same three shapes of store we see on quote calls every month, and the honest answer is different for each one.

What “$39 a month” turns into

Shopify’s list prices are Basic at $39/month, Shopify at $105/month, Advanced at $399/month, and Plus starting around $2,300/month for high-volume merchants (plans and exact figures shift over time — check Shopify’s current pricing page before you budget against these). The plan fee is the smallest line item on the bill for any store that’s actually trying to grow.

The app stack is where the real spend lives. A store running normal marketing operations — not doing anything unusual — typically ends up with:

• Product reviews and UGC: $19–$49/month
• Email/SMS marketing (Klaviyo or similar, scales with list size): $60–$300+/month
• On-page SEO and metadata management: $20–$30/month
• Page builder or advanced theme customization: $20–$50/month
• Inventory or dropship sync: $30–$99/month
• Subscriptions or loyalty/rewards: $30–$100/month
• Upsell, cross-sell, or cart-recovery tools: $20–$40/month

Stack four or five of those together and a store doing real marketing is paying $250–$650/month in apps alone before the plan fee. None of that is unusual or a sign of bad decisions — it’s what running an ecommerce marketing program on Shopify actually costs, because every feature the platform doesn’t build in natively gets rented instead.

There’s a second cost that’s easy to miss: if a store doesn’t use Shopify Payments — because it needs a specific processor, has a merchant account elsewhere, or operates in a category Shopify Payments won’t cover — Shopify adds a transaction surcharge on top of normal card-processing fees: 2% on Basic, 1% on Shopify, 0.5% on Advanced. On a store doing $80,000/month in sales, that’s $400–$1,600/month for nothing but routing the payment through Shopify’s system. Stores on Shopify Payments don’t pay this; it’s worth checking which bucket a given store falls into before running the numbers.

What the custom side actually costs

A custom Laravel storefront is priced as one fixed number, not a recurring fee that scales with how many features the store needs. The Commerce package starts at $6,500 one-time: a real product catalog with live inventory, Stripe or PayPal checkout, customer and order dashboards, coupon and shipping rules, and automated order emails — built into the platform, not rented from five different vendors.

After launch, a monthly care plan replaces the app-subscription habit rather than adding to it. The Growth plan runs $350/month and includes three hours of edit time, performance and SEO monitoring, and a monthly report — the kind of ongoing work that on Shopify would otherwise mean paying separately for an SEO app, a speed-monitoring app, and a developer to make changes the drag-and-drop editor can’t handle. Card processing still costs money either way — Stripe charges roughly 2.9% + 30¢ per transaction whether the checkout is custom or Shopify-hosted — so that line is a wash between the two options and isn’t part of the delta below.

The 3-year math, three store sizes

The comparison only means something against a specific store, so here are three, with the same simple formula: Shopify’s cost is the monthly total × 36 months. The custom build’s cost is the one-time build fee plus the care-plan fee × 36 months.

A small or early-stage store — stay on Shopify

Monthly spend: Basic plan ($39) plus one or two lean apps (~$40), on Shopify Payments. That’s about $79/month, or $2,844 over 3 years. A Commerce build ($6,500) plus Growth care ($350/month × 36 = $12,600) totals $19,100 over the same period. There’s no version of this math where a small store comes out ahead switching — the fixed cost of a custom build takes years to earn back against an $80/month bill. This is the store that should stay exactly where it is.

A growing store with a real marketing stack — breakeven around 18–24 months

Monthly spend: Shopify plan ($105) plus a genuine app stack — reviews, email/SMS, SEO, page builder, inventory sync — averaging around $545/month, for a total of roughly $650/month. Over 3 years that’s $23,400. Against the same $6,500 build and $350/month care plan ($19,100 total), the custom build is cheaper by month 22 and by year 3 has saved this store about $4,300 — while also owning the code outright instead of renting five separate subscriptions that all have to be re-configured every time one of them changes its pricing or shuts down.

A high-volume or Shopify Plus store — breakeven under a year

Monthly spend: Plus plan (~$2,300) plus an enterprise app stack — personalization, loyalty, ERP or 3PL sync, advanced reporting — averaging around $700/month, for a total of roughly $3,000/month. Over 3 years that’s $108,000. A store at this scale isn’t a Commerce-tier build anymore; it needs the Custom Platform tier, priced from $15,000 with a Priority care plan at $750/month ($27,000 over 3 years), for a total of $42,000. Breakeven lands around month 7, and by year 3 this store has kept roughly $66,000 that would otherwise have gone to plan fees and app subscriptions. This is the store where switching isn’t a close call.

What the math above doesn’t include

A few things sit outside the dollar comparison but still belong in the decision. Every app in a Shopify stack is a separate vendor with its own uptime, its own pricing changes, and its own risk of getting acquired or shut down — three apps disappearing or tripling their price in the same year is not a rare event, and it’s a cost the monthly-total math can’t predict. A custom build has the opposite risk profile: one codebase, one team responsible for it, and a feature that’s slow or wrong gets fixed in the code instead of waiting on an app vendor’s roadmap. Neither of those is free — a custom platform still needs the care plan above to stay maintained — but they change who’s holding the risk, which matters as much as the total at the bottom of either column.

The honest verdict

Store size and app-stack weight are the two things that actually decide this, not preference for one technology over another:

• Under roughly $200/month in total Shopify costs — plan, apps, and any transaction surcharge combined — stay on Shopify. The platform is well-built, the ecosystem is mature, and a custom build won’t earn back its upfront cost within 3 years at that spend.
• Once the app stack is running $400–$700/month and growing every quarter, the math starts favoring a one-time build, because the custom platform’s cost is fixed while the Shopify app bill keeps climbing with the business.
• On Shopify Plus, or paying transaction surcharges on real volume, the breakeven point usually lands inside the first year — this is the clearest case for moving.
• Somewhere in between, the deciding factor usually isn’t the dollar total at all — it’s whether the store keeps hitting a wall the app stack can’t patch over, like pricing logic Shopify’s checkout won’t allow or a workflow five apps are stitched together to fake.

None of this is a sales pitch dressed up as math — plenty of stores are exactly where they should be on Shopify today, and telling them otherwise would just be selling a build they don’t need. The side-by-side breakdown of what each platform includes by default lives on the Shopify vs. custom comparison page, and for stores that run the numbers and land on “yes, we should move,” the Shopify-to-custom migration page covers how catalog data, customer records, and order history move over without losing search rankings in the process.

If it’s not obvious yet which side of this a store falls on, get a fixed quote with the real numbers plugged in, or talk it through directly before committing either way.