A: Yes. The team does not charge. If you see a site asking for payment, it is a scam.
The community operates on a "lending" philosophy. The files are distributed with the understanding that if an official release of the theatrical cut ever happens, fans should delete their fan-made copy and buy the official one. Project 4k80 Download
(Note: Compatibility varies based on the specific iOS version and the tool being used to deploy the exploit.) A: Yes