I have never looked, but I have never even seen ebay templates, just services like auctiva that already have the pre-made templates.
But if you have a little html knowledge its easy to copy someone else's auction page and make your own re-usable template. You just have to be sure to save any images used and upload them to your own server and then be sure to change the reference in the html to YOUR images instead of theirs.
There is also a prog in the downloads, WinHTTrack website copier that works awesome and makes it easy to copy sites and grabs all the images & code so you can create your own templates. However, I have never tried it on an ebay page.