You want a realistic software development or developer cost before requesting or comparing a quote.
If this is not quite your situation, start with the path that matches what you need next.
Compare hourly and part-time work when you know the budget but not the final scope.
Turn a cost estimate into an independent check of assumptions, effort and ownership.
Talk through build-versus-buy, stack and hiring decisions before they become expensive.
Compare AI feature hour bands, contract models, and provider costs before requesting a quote.
Software pricing looks evasive from the outside, and sometimes it is. But the honest reason for the range is that the same sentence describes wildly different amounts of work. 'A booking system' is a weekend if it is a calendar and an email, and it is months if it handles staff rotas, deposits, refunds and no-shows.
What you can reasonably demand is not a single figure but a stated set of assumptions: the price, and the specific things it assumes to be true. Then when an assumption turns out wrong, you can see exactly which one moved the number.
In roughly the order they matter, these are the things that change a quote most.
An agency rate covers the engineer plus the people around them: sales, project management, and the gap between contracts. That structure is worth paying for on large programmes of work with many moving parts.
For the size of work most clients bring — a feature, an integration, a repair, a few weeks of building — that structure is overhead you fund without using. Working directly with an experienced independent developer typically lands well below agency pricing for the same output, because you are paying for the hours that produce the thing.
The build is not the whole cost, and the items below are the ones that surprise people six months later. Ask about them before you sign rather than after.
An hourly rate is only one input. Total cost also depends on the hours required, the quality of the brief, the number of unknowns, and the support the system will need after launch.
Use Cost for a realistic range and its assumptions. Use Review when you already have a quote and need someone independent to test it before you approve it.
Because the same description covers very different amounts of work. The range narrows sharply once someone asks a dozen specific questions about your case.
For small and medium work, usually yes, because you are not funding sales and management overhead. For large multi-team programmes the agency structure earns its cost.
