[yelvertoft]

ebay themselves know this is a major problem, they have their own guide on how to spot fakes:
http://reviews.ebay.com/How-to-spot-...00000001567660
and
http://reviews.ebay.co.uk/How-to-spo...00000003010197

see also
http://www.overclockers.com.au/wiki/Fake_Memory_Cards