With respect to the original question about what to do with eBay fakes, I think we have at least two options that are not likely to run afoul of the Forum's policies.
The first is to assemble pictures and descriptions of items that are recently made but frequently "misrepresented" as being older or more valuable than they are. I put together an old thread on Contemporary Thai Swords for that purpose several years ago:
http://www.vikingsword.com/ubb/Forum1/HTML/001291.html
The second is to persuade eBay to take action. You may wish to notify eBay of such fraud through their on line system. Access to those services can be found here:
SUSPECTED SELLER FRAUDS ON EBAY
These are two approaches to addressing the problems -- there may be other ways too.