I have been uploading a number of my older pictures on RedBubble. I am quite happy with how it works, upload is simple and fast, and they provide not only website creation tools, but also embedding of slideshow or semi-shops within your own website.
I am not uploading on DeviantArt, as I am less impressed by the overall quality of the pictures there, and I would have to pay $25 per year to be able to get more than about 10 % of the sales price. Given my sales so far, this would be money out of the window. If RedBubble gives some results, I may revisit other sites. Or just stick with them. I like them.