Buying fan edits or restorations is absolutely not any worse than downloading them for free.
There seems to be a common misconception that if you already bought a legal copy of a work, you are entitled to download other copies for free. This is false. Also, the people who make the fan edit or restoration never had the legal rights to distribute it in the first place since they are not the copyright holder. Even if they edited it from their own personal copy, that does not give them distribution rights.
Selling, on the other hand…