only going by personel experiance.

bought a 2gb sandisk card mmc a few years ago off ebay, came boxed, looked then real deal, lasted about 10 days before it said not inserted etc.

no worrys ill contact sandisk 5 yrs warrenty, only for them to reply that the biggest mmc they did was 1GB

went to pc world and the packaging was allmost correct think it was the wrong shade of blue or something was the only difference