a free website to find artists and auction prices for their work?

Answer 1

http://artnet.com isn't too reliable for that. http://www.christies.com/ is mainly for antiques.

........And of course, the all-time favorite is Ebay. It's the best one when you get right down to it; everything's there, you even get to see old listings if you register, and the site is quite straightforward.

Answer 2

Try www.bananacake.co.uk It is a good site for new and young artists.