Some of the yahoo groups are setting up classified sections. Do you belong to any embroidery or sewing groups?
I hope not! This site is special because it's not cluttered up with ads. Try Ebay--that's where I look when I want to buy something. Just my opinion, however.
I think you should contact the site owner, Veronika Bulatova, at the "contact us" button below, and request her permission to do this. I am not sure if this site accepts advertising, which is what I think this would be classified as.