From what I can see no one is selling anything, this has all got blown out of proportion.
I like John's hack, and John has been very good in supporting his hack. I am sure his time is valuable just like everyone elses.
I don't think he is looking for "pay me or else" perhaps the way it should have been said was "if you like my hack please send me a donation for beer money"
I hope John continues with his work and the Arcade is released to the public.