Ebay have been cracking down on KO's for the last couple of years, but these are mostly ones that appear as MOSC and MISB as the bootleggers have gone to the extent of replicating the packaging as well as the figures (even down to the Hasbro logo and copyright).

Loose KO's appearing on Ebay are harder to identify as most out-of-the-package toys are hard to spot as there are fewer tell signs that it is fake.