I was considering purchasing Snow Leopard and installing it in Virtualbox so I can develop for iOS.

- Is it possible to do so?
- What needs to be done exactly? Is there a guide?
- Will Apple prohibit me from installing Xcode/running a simulator/publishing apps from a hackintosh?
- Is Snow Leopard really that cheap ($29.99) or do I need to buy a "full" version ala Windows?