I am not sure there is any way to stop these KopyKats, but if you feel like it you can start a campaign by notifying e-bay some of the Logo's Reproduced on the copy Cues are Registered TradeMarks.
Not sure it will do much good, as IMHO E-bay wants their commission from seller sales. Also the famous company S.T. DuPont Cigarette & Cigar Lighter, are copies and offered for sale on e-bay. The sellers in their discription use the name "DuPont" that is DuPont's trademark name.
Think this is all about making a buck by folks "off-shore" in many countries who will copy anything they can, that will sell. Be it a Pool Cue, Spyderco Knife, Micro-Tech Knife, Cigarette Lighter, Cigar Lighter, Sport Team Jersey, etc.
E-bay is known for selling counterfits, and knock offed items. But their are also good deals to be had from honest seller on E-bay.
Buyer beware.