What custom development costs, and why quotes vary so wildly

You've just had a developer quote you R15,000 for a feature another quoted at R45,000. Both seemed competent. Both said they'd deliver in a month. You're left wondering if one is desperate for work or if the other is padding the bill.

Wild swings in custom development quotes rarely mean dishonesty—they usually mean you're comparing quotes that aren't actually for the same job. Understanding what sits underneath the number helps you spot the difference.

Scope compression and hidden complexity

A cheap quote often buys you a narrow slice of the job. A developer quotes R15,000 to "build a contact form"—sounds straightforward. The higher quote at R35,000 includes form validation, email delivery setup, spam filtering, database storage, admin notification, mobile responsiveness, and integration with your CRM. Same phrase. Different projects entirely.

Custom development is a moving target. What clients describe as simple often has layers—security, edge cases, testing, documentation—that aren't obvious until a developer digs in. A developer who quotes low either hasn't looked closely or plans to hand back something fragile. One who quotes high has accounted for the stuff nobody mentions until it breaks.

The time variable

A developer working alone from home at R300/hour will quote differently from an agency with 20 staff. But timeline matters just as much as hourly rate. A rushed job by an expensive developer might cost less than a careful build by a cheaper one if the cheaper one is booked solid for three months. Conversely, a developer who can start immediately might charge more because you're not sitting idle waiting. Rush premiums are real.

Experience also shifts the curve. A senior developer codes features in half the time a junior takes, but charges double the hourly rate. The senior's quote looks expensive until you realise you're paying for speed and fewer bugs, not inflated ego.

What gets left off the table

Many low quotes exclude the mundane but essential: initial discovery calls to clarify what you actually need, revisions after you've seen a draft, testing and debugging, deployment to your live server, or a handover where the developer explains what they built. Some quotes cover the code but not the hosting, domain, or software licences your project needs. Others skip ongoing maintenance or assume you'll troubleshoot your own server.

Ask each developer what "build my app" includes and what sits outside. The gap between quotes often lives there. One developer includes three rounds of revision; another charges for revisions separately. One assumes you'll manage deployment; another builds and launches it for you. Neither is wrong—but they're not quoting the same job.

Platform, tool and integration choice

Two developers might both build you a customer database, but one uses a $50/month platform with built-in tools and charges R20,000 for a light integration job. The other codes a custom solution from the ground up in Python and charges R60,000 because they're doing the infrastructure work that the platform handles elsewhere. The first is cheaper to build; the second might be cheaper to run and scale. Or vice versa.

Integrations with existing software—payment processors, email services, third-party APIs—also fracture quotes. One developer inherits a system already plugged into your payment provider; another has to negotiate access, debug connectivity, and handle failed transactions. Same goal. Wildly different effort.

Reading between the lines

A quote is a bet by the developer about how long the work will take and how much they'll earn. It reflects their risk tolerance, their backlog, what they've learned from similar projects, and whether they're hungry for work. It doesn't always reflect quality. A high quote from a specialist in your industry might be worth it; a low quote from someone who's never built in your space is a gamble.

When quotes diverge, ask each developer for a written scope: what exactly will be delivered, what happens if requirements change, what's included and what costs extra, and what happens after launch. Most disagreement evaporates once everyone's reading the same contract. The quotes probably won't converge, but you'll finally be comparing apples.

On Strove, verified developers list their approach and past work—you can vet their experience before you ask for a quote, narrowing the odds of pricing mismatch.