does anyone know this seller? may have gotten fakes

I just started collecting Animation Cels and ran into some X-Men Animated Series Cels at a great price. When they arrived they appeared off and a little too new looking. Does anyone know an ebay seller named Alan Kleiman who goes by all4cash or mycelspace? If you do, can you verify he is legit? sent him a message asking about a refund but wanted to do some deeper research.