Ask HN: How much would you pay for an iOS app?

How much would you be willing to pay for a fully functional iOS app that would be automatically generated by a software, based on your needs. For example, you could add modules such as: login/sign-up, news feed, user profile, photos, videos, etc.

It would be limited at first but would still cover the basics. What would be a fair (MAX) price for you? Even a range is fine since you could add up N features and each feature would have a specific cost.

Thanks