Custom Shopware plugin instead of a subscription: the math
4 min read
by Marcel, Senior software engineer
If you run a Shopware store, you know the drill: there's a plugin for almost every extra feature — and a lot of them charge a monthly or yearly fee. Taken one at a time, that looks harmless. Added up and stretched over the years, it turns into a quiet, permanent cost block. Let's look at when building your own plugin makes more sense instead.
The short version
- The math: A €49/month plugin costs €2,940 over five years — and you own nothing at the end.
- Custom instead: A comparable plugin lands in the high three-digit to low four-digit range — one time.
- Break-even: One-off price divided by monthly fee — €990 against €49/month is about 20 months, €2,900 is closer to five years.
- Rule of thumb: Paying more than €30–40 a month for a feature you need permanently? Look at your own solution.
The problem with subscription plugins
Subscription plugins come with three catches that tend to get lost in day-to-day business:
- They cost you forever. As long as you need the feature, you keep paying — with no end in sight.
- They never belong to you. Cancel the subscription and the feature is gone.
- You're dependent. If the vendor drops support or discontinues the plugin, you have a problem.
On top of that: a subscription plugin often does ninety percent of what you need — but not the one thing you actually asked for. So you're paying indefinitely for a solution that doesn't quite fit.
The math
Take a typical subscription plugin at €49/month. That's €588 a year. Over five years: €2,940 — and you own nothing at the end of it.
A comparable custom plugin usually lands in the high three-digit to low four-digit range, depending on the feature — one time. When it pays off comes down to the ratio of the two numbers: against a €49/month subscription, a €990 plugin is paid off after roughly 20 months, a €2,900 one only after nearly five years. Against €99/month, halve both. Rule of thumb: divide the one-off price by the monthly fee and you have your break-even in months.
What that comparison leaves out — and most articles on this topic conveniently do too — is that a custom plugin is not free after launch. Shopware ships minor updates regularly and a major version every few years, and your plugin has to keep up. Budget for a few hours a year for compatibility work, more in a major-version year. Against a subscription that number is still small, but it is not zero, and anyone who tells you otherwise is selling you something.
The honest version of the five-year math therefore looks like this:
| Subscription at €49/month | Custom plugin at €990 | |
|---|---|---|
| One-off | €0 | €990 |
| Year 1–5 running | €2,940 | maintenance only, a few hours a year at €79/h |
| After 5 years | nothing owned, fees continue | plugin is yours, source code included |
The subscription wins if you need the feature briefly, if it is genuinely complex (payment, tax, shipping carriers), or if the vendor keeps up with regulation for you. Your own plugin wins on permanent, narrow needs — and on independence.
Top tip
Rule of thumb: if you're paying more than €30–40 a month for a plugin and you need the feature permanently, it's almost always worth looking at your own solution.
What speaks for your own plugin
- A one-time cost instead of recurring fees.
- It belongs to you — no vendor can take it away.
- It fits exactly: we build precisely the feature you need, with no dead weight.
- Update-safe: we build your plugin to the official Shopware standards so it survives future updates too.
When a subscription still makes sense
Honest is honest: for features that need constant maintenance — integrations with third-party services that change frequently, for example — a subscription can be the smarter call, because the vendor handles the ongoing upkeep. That's exactly what we look at together with you before we build anything.
Strengths
- A one-time cost instead of recurring fees with no end in sight.
- It belongs to you — no vendor can take it away.
- It fits exactly: precisely the feature you need, with no dead weight.
- Built to the official Shopware standards, so it survives future updates.
- No dependency if a vendor drops support or discontinues the plugin.
Weaknesses
- Higher upfront cost: high three-digit to low four-digit range, one time.
- Break-even = one-off price divided by monthly fee: €990 against €49/month is roughly 20 months, €2,900 is close to five years.
- For features that need constant maintenance, a subscription can be smarter.
- Below €30–40 a month, the savings rarely justify the effort.
How we work
You tell us which feature you're missing or which subscription plugin you want to replace. We estimate the effort, weigh it against your running costs, and tell you plainly whether your own plugin is worth it for you. You can take a calm look at how a project like this works step by step beforehand.
Are you currently paying for Shopware plugins you could actually own? Let's run the numbers together — it won't cost you anything.
Frequently asked questions
Is a custom Shopware plugin cheaper than a subscription?
With a permanent need, usually yes. A typical subscription plugin at €49/month costs €588 a year, so €2,940 over five years – and you own nothing at the end. A comparable custom plugin lands in the high three-digit to low four-digit range, one time, and pays for itself once the one-off price divided by the monthly fee has elapsed — roughly 20 months at €990 against €49/month.
From what monthly fee is your own plugin worth it?
Our rule of thumb: if you’re paying more than €30–40 a month for a plugin and you need the feature permanently, it’s almost always worth looking at your own solution. Below that, the savings often don’t justify the development effort.
What happens if I cancel a subscription plugin?
The feature is gone. That’s the core problem with subscription plugins: they never belong to you, and you stay dependent on the vendor – if they drop support or discontinue the plugin, you have a problem regardless of how reliably you paid.
When does a subscription plugin still make sense?
For features that need constant maintenance – integrations with third-party services that change their interfaces frequently, for example – a subscription can be the smarter call, because the vendor handles the ongoing upkeep. We look at exactly that with you before we build anything.