The seller says that because I posted the Amiga I bought from him on this forum and his friend told him, he doesn't have to help me.
This is not a legal argument. You can post to any forum you like about whatever you like, but if the terms and conditions of the sale and the insurance you have with your purchase are valid then you CAN make a claim against the seller regardless.
Don't give him any room to manoeuvre. Keep up at him and your credit card company / pay pal, ebay or whatever you paid with.
I just bought a new Amiga 4000 for $575.
Seems a lot. The price of "bare bones" A4000 EC030's has been dropping in the UK. They are averaging about £155 ($248)
Thanks to whoever told this guy I posted!
I'm pretty sure it was google. Doubt this guy has any friends.