The fixed-price MVP package, and what it actually covers
Two firms here sell an MVP for a published number. It is a genuinely useful product and it is also the place founders get surprised, so ask these before signing.
What triggers a custom quote
Both packages cover projects that fit a standard scope, and both firms will tell you when yours does not. Find out early rather than three weeks in. If your product needs a complex permission model, several integrations or a regulated data path, you are almost certainly outside the package.
Whether design is included or bolted on
A $10,000 build package with template-level interface work is not the same purchase as $10,000 covering design and build. Ask to see the last three products delivered under the package and judge the screens.
Who owns the code
Asper Brothers state full IP transfer explicitly. Not everyone does, and a due diligence process will find it.
What was deliberately left out
A good MVP partner will hand you a list of what they cut and why. If nobody can produce that list, scope was never really decided and you have bought a smaller version of everything instead of a complete version of something.
What happens in month two
Fixed packages end. Ask the hourly or retainer rate for the work after launch before you commit, because that is where the real relationship starts and where the pricing leverage disappears.