Any good art auction websites for paintings/sculptures by contemporary up and coming artists?

Probably not exactly what you’re looking for, but I’m quite taken with browsing www.deviantart.com – and you can order prints there.

What about something like etsy or mintd
They’re not exactly “sculptures” (a lot of jewelry and such), but there are some really neat things, all one of a kind.

a friend of mine just walked in to an art gallery one day and showed the owner a small painting of his, and asked the owner if he could put his painting in the gallery and the owner put it up the next day.

@Les- I love Etsy. You’re right about the sculpture, but I’ve also found some amazing and very inexpensive prints on there.

I’m not sure what price range you’re looking for, but you might also try these:

www.artocracy.org
www.boundlessgallery.com
www.keepcalmgallery.com