Already in possession of a card of this brand (TS64GSDXC10E Transcend SDXC Memory Card 64GB Class 10), I'm tempted by the promotion. For a lower price than the equivalent in class 10 "full stop", I received a micro SD card class 10 UHS-1, which seems faster than my card 64GB Class 10 (although both products are unlikely to be comparable in technical terms like those of other very sharp comments).
I use the card to transfer files between my smartphone, my computer and my tablet and the time I spend watching progress bars for file copying everything seems acceptable.
5 stars, therefore, for the product "done its job", according to my personal requirements.