Amazon is replete with fake Micro SD cards. If the name is weird and the price is low, it is probably fake. (See this thread.)
Legitimate brands include:
SanDisk
Samsung
Lexar
SiliconPower
Kingston
Gigastone
Micro Center
Be careful if you buy a Lexar–the quality of the card is good, the packaging sucks. Last year I bought around five Micro SD cards at once from different brands. I unpacked them pretty casually (mostly they just dropped into my hand when I removed the plastic bubble from the cardboard) but when I went to remove the most expensive card in the lot (a high speed rating Lexar 256 GB) it snapped in three pieces as I tried to lift it from the bubble. They wedge their cards in tight, something problematic for something that I discovered to be very brittle with zero room for flexing.
Here is a guide to the confusing mess of speed rating systems: