eBay has a well-hidden page that will allow you to quickly change
your gallery photo. Whether you want to fix a bad link to
your Gallery photo or change your Gallery photo, click
here to visit the "Change Your Item's Gallery Picture" page. You can
Bookmark the page, so you'll know where to find it next
time.
eBay periodically changes the link to this page, and it is not easily
found through the Seller help screens. If the link no longer works, go to
www.ebay.com, and in the upper right corner,
click on "Site Map" and under the "Sell" column, you can find a list of helpful
links, including where to change your Gallery
photo.