Do you know of a good site where someone can buy or sell 3D models? Have you got any direct experience of their service?

i''ve not bought or sold anything there, but you might try
Renderosity
Go to the Marketplace to check out their stuff.

I dont have any experience but it seems to fit what you ask for, so you might wanna give a shot at Brave Tree productions, who sell stuff at Garagegames

hope this helps

Sancte Isidore ora pro nobis !

If you want to buy some 3d models (in fact, have someone do them for you), then, I guess, my wife would be the right person, she did all the art (both 2d and 3d) in Eternal Lands, and she works kind of cheap.

Height Map Editor | Eternal Lands | Fast User Directory

www.turbosquid.com

John