Ah well, we've all been there. I have a small pottery horse that reeked of ancient charm on the photo but was naff when it arrived. Ebay is a jungle and they're very half-hearted in the face of official requests to clean it up as they'd lose almost all their antiquities business. Someone in New Scientist has just said - "It is now a reasonable assumption that any Egyptian piece that is for sale is either fake or was looted."
http://www.newscientist.com/article/mg20928040.200-egyptologist-the-west-is-driving-looting.html