Partial Class 2 cards as Class 10 cards in circulation

I ordered the card 2x St. at Amazon.co.uk. The mega was slow, even though the memory card looks exactly (on the front) like the one shown here Class 10 card. But on the back stood MMB3R32GUACA-GE Made in Korea. With google but this designation haunts a Samsung class 2 card. So after a purchase check the number on the back! Hope I get my money back from Amazon.co.uk, since sales through blah FBA ..... And you could give me a tip. in this sense, eyes on the eggs ah. Memory cards -Purchase