I was able to get the full capacity out of this card but it is is very slow. It is supposed to be a class 10 sdxc card but there are no class 10 markings on it. I tried using it in my Raspberry Pi but it was totally unsuable with this card.
I just received this package today and as soon as I did, I inserted it into my laptop, formatted it for NTFS, and then ran a full test with h2testw.exe. The total time to run the test was between 2 and three hours. The SD card passed the test 100%. The program, h2testw, filled the SD card with blocks of data and then read them back verifying each one. In this way it both verified the total capacity of the card as well as its integrity. In light of the amount I paid for this card I can only say that it is a great value. I would certainly recommend it given my experience with it so far.
Update: I will add that the measured speeds of the SD card were less than the posted speeds. They ranged from 45 MB/s to 65 MB/s. That is quite a lot less than the claimed speed. I still find the card acceptable though because a) the actual speeds are quite good as it is and b) to expect a card of this capacity and price to operate at those claimed speeds is unrealistic.