The price was great.  Since this is an SDXC Class 10 card,I expected pretty decent write speeds.  I copied about 30GB of data from my computer HD to this card and it took over 8 hours.Of course, since that was a one-time thing, I didn't really mind.  It works great in my Microsoft Surface Pro.  I just cannot believe that I could find a 64GB micro SDXC card for under $50.  The sale is over, of course, and I've not been able to find them this cheap since.I would buy another one if it were comparably priced.