What Does a Custom Webshop Feature Cost?
By CodexierPublished 5 min read
Every webshop reaches a point where the platform does almost what you need, and the gap is filled by an app, a plugin or a workaround someone does by hand every morning. Custom development sounds expensive by comparison, but the comparison is often made wrong: a one-time build against the first month of an app, instead of against three years of subscriptions, speed loss and manual work. This guide explains how to make that comparison and what actually drives the price of a custom feature.
App, plugin or custom feature
| Option | Upfront cost | Ongoing cost | Main risk |
|---|---|---|---|
| App or plugin | Low | Monthly fee, often tied to order volume | Vendor changes price, stops updating or slows the store |
| Several apps combined | Low | Several fees plus manual glue work | Conflicts between apps, hard to debug |
| Custom feature | Higher | Hosting and maintenance | Needs a developer to change it later |
| Manual workaround | None | Staff time every day | Errors and dependence on one person |
What drives custom development cost
The price of a custom feature is mostly about how many systems it touches and how many edge cases it must handle, not how much code it contains.
- Integrations: a feature that only changes the storefront is cheaper than one that also talks to Fortnox, a warehouse system or a shipping provider.
- Edge cases: returns, partial deliveries, discount codes, VAT for EU customers and B2B pricing multiply the logic.
- Admin interface: whether staff need a screen to manage the feature or it can run on configuration.
- Platform limits: Shopify restricts what can be changed in checkout, WooCommerce allows more but requires more care with updates.
- Testing and data: features that touch payments or stock need thorough testing with real-looking orders.
Pricing on our side is fixed per scoped feature, so you know the cost before work starts. The base price and what it includes are on the custom e-commerce features page, and the full list on the pricing page.
Maintenance of custom code
Custom code is not free after launch. Platforms update their APIs, payment providers change requirements and your business rules evolve. Budget for this honestly: a small, well-built feature typically needs an occasional check after major platform updates, while an integration with several external systems needs regular attention.
- Insist that the code lives in your own repository and belongs to you.
- Ask for short documentation: what the feature does, where it runs and what it depends on.
- Use platform-supported extension points, such as Shopify apps and functions or WooCommerce hooks, rather than editing core files.
- Add monitoring or logging so failures are noticed before customers notice them.
Scoping a feature before a quote
A good scope turns a vague wish into something that can be priced fixed. Write down the following before you ask any developer for a quote, and you will get comparable answers.
- The problem in business terms: what happens today, how often and what it costs in time or lost sales.
- The desired outcome: what the customer or staff member should be able to do afterwards.
- Systems involved: platform, apps, accounting, warehouse, shipping.
- Edge cases you already know about: returns, cancellations, foreign customers, companies.
- What is out of scope for the first version.
If the answer to the first question is small, for example a few minutes a week, stop there. A custom feature is not worth it, and an app or a manual routine is the honest recommendation.
Examples of feature types
Product configurators
Choose size, material or engraving with a price that updates live. Complexity depends on how many combinations and rules exist.
B2B pricing and ordering
Customer-specific prices, invoice payment for approved companies and quick reorder. See our guide to B2B webshop features for more.
Order and stock integrations
Orders to Fortnox or a warehouse system, stock back to the shop. Often replaces a daily manual export.
Booking inside the shop
Sell time slots, courses or rentals with capacity limits, where standard booking apps do not fit your rules.
When not to buy from us: if your shop is new and you have not yet validated what customers want, start with standard apps and learn first. Custom work pays off once the need is proven. To check whether yours is, book a free call and bring your current app list and monthly fees.
Frequently asked questions
Is a custom feature always cheaper than apps in the long run?
No. For common needs such as reviews or email marketing, a maintained app is usually the better deal. Custom work wins when you combine several apps for one job, pay fees tied to volume or run a daily manual workaround.
Can custom features break when Shopify or WooCommerce updates?
They can, especially if they modify core files. Features built on supported extension points are much more stable, and a maintenance agreement covers checks after major updates.
Do we own the code?
You should, and with us you do. Make ownership of code and repository access an explicit part of any agreement with any developer.
How long does a custom feature take to build?
Small storefront features can take days, integrations with several systems several weeks. Testing and your own review time are often the longest part, so plan for them.
Paying for apps that almost do the job?
Bring your list of apps, their monthly cost and the manual steps your team does. In fifteen minutes we can tell you which ones are worth replacing and roughly what a scoped custom feature would involve.
Book a free 15-minute call