We recently purchased a few pieces of art from a website called etsy.com its a site to buy or sell handmade items (everything from clothes, jewelery, ceramics and art).
You get original art at way way cheaper prices than shops or galleries, ours was from an artist in Louisiana and even with P&P it was amazing value, nothing better than having an original on your wall. (I have nothing to do with the site just a very satisfied customer).
The only problem is the sheer amount of art for sale, it takes a while to go through even a fraction of whats on offer.