I can't believe people are allowed to get away with selling these blatent rip offs I bet Brian & Roger are fed up as well. Some even have the cheek to claim to be official releases take a look at this lot: link link link
surely these are against ebay policy?
You could be, but you're not. Even if it's not "copymasters" it could be the second pressing that Jacky "discovered" a few years later...
As for the other two, yes they're against ebay policy, but they list millions of items a day and can't police them all. If you don't like it, don't bid. If you feel the buyer may be confused and think it's an official release, send the bidder a message. If you feel really strongly (bearing in mind that sheer boot attack have been openly selling these for years), then report the seller to ebay. They'll remove it under their "unauthorised copies" rules, and the rich dealers like Mr Jemmett will be able to keep their high prices...
Try searching for Queen's BBc Sessions on ebay - not there anymore (at 4 or 5 quid a throw) because somebody squealed...