I sell Middle Eastern embroidery patterns on Etsy that I design myself and am very happy with my little shop. It's a very part-time thing and is just a nice way for me to show something of one of my great interests. The upkeep and closing costs are tiny.
I had also sold them on Ebay, but Ebay stopped allowing the selling of downloadable items, like my patterns. Don't know why, though.
I buy lots of quilting fabric on Ebay, and have met some very nice sellers and kit designers that way.