Recently I purchased samsung memory card from book my offer, I saw an offer it seemed good to me two memory card 64 and 128 gb at 850. Overall at this time it was a good deal but after using my card I came to know that one of my is not working properly. book my offer is good but it indulge combo offers, in which you do like the one product but not the second, hope they may consider. any way they provides the best offers.