I notice that there are always deals for used projectors on Videogon. New 1080P projectors are affordable now but seems like used are selling for dirt cheap prices. Sonys, Epson, Panasonic for 1/3 of their original prices in some cases! Whats the drawback? Is it safe if the seller has any history?

I've had fairly good luck in my two projector purchases off of Videogon, and I did use the sellers history as a guage to buy or not.

On a side note, I'm in Mountain View.