I check periodically. My favorite test is "audubon bird art print" and "audubon bird lithograph" because there are millions of them for sale on the internet. As usual one of mine listed on eBid came up on the first page with both searches. I have also found that just "audubon bird print" brings it up on the second page. A lot depends on how specific the buyer search words are.
Something I do find interesting is that this time the Wild Turkey listing showed up. Last time it was the Robin. It seems as though Google rotates when there are several choices on the same site.