I'm not too familiar with how quickly Google crawls/updates pages in its index, but I'd say 10 days wouldn't be enough to get indexed before they end (unless, as softwaresubmit said, it was on the home page).
You might do better to try to optimize your eBay About Me or Store pages, or some fixed-price listings (since they last for more than 10 days). (Then again, if you can get your eBay Stores page in Google with a decent
PR, I'd think you would also have a better chance of having your items indexed quickly.)