Would you buy a web application starting kit?

[eluser]Ollie Rattue[/eluser]
Hey,

I am currently developing my first for sale web app - Flaregun (http://getflaregun.com). What I am realising is that there is a lot of 'common' code which every web app requires. Anyone who builds a web app needs:

- User accounts
- Signup / login / amnesia (forgotten password)
- Logged in account (change password, email, mailing list subscription)
- Plans - displaying payment plans powered by db
- Account - plan upgrade / downgrade
- Billing - recurring monthly payments
- Invoicing
- Basic web app design and CSS

The special stuff that makes your web app different from mine is what you should be concentrating on. This routine code is just extra fluff that everyone has to do (and learn the best way to do through trial and error). So this got me thinking wouldn't it make sense if I could buy a Web app starting kit. On top of the above it could also include a nice admin system which would show:

- Users
- Plans use (percentage of users on each)
- Upgrade and downgrade statistics
- Monthly income (eventually growth predictions)

All of the above would save me days of time. Personally if the code was good enough I would be willing to pay upwards of $750. I envisage a license and then perhaps a yearly subscription to pay for continued development.

- So would you guys pay for this?
- What price point would you be willing to pay?
- Is the number of people developing web apps in CI large enough to support this?
- Are there any other features which you would find useful?
- What's the law on selling a package of code which includes libraries by other authors?

I routinely open source my CI code (https://github.com/ollierattue) but this feels like it has so much value commercially that it warrants being a paid for product.

All thoughts and ideas welcome.

Thanks,