I got ripped off by a seller on Amazon too whilst buying an 'unsused copy of CS3'. It was a torrented job burned onto disk and sold to me for £400!!
The DVD was blatently printed using an inkjet printer and it was smudged all over the place.
I got my money back a few days later after threatning them with the police. he said he was shocked it was a copy and would discuss the matter with his 'supplier'.
Soon as I got my money back i reported them to Amazon who as far as I am aware did bugger all about it :icon_cursing: