I just saw on that the Samsung EVO Select 64GB MicroSD is on sale for $15.99 (reg $24.99). Appears to be the lowest price to date according to 3C sold and shipped by Amazon.

– Up to 100MB/S Read and 20MB/S Write Speeds; UHS Speed Class U3 and Speed Class 10
– 10 Year Limited : 10 Year Limited Does Not Extend to Dashcam , CCTV, Surveillance Camera and Other Write Intensive Uses

Amazon product: Samsung EVO Select 64GB microSDXC UHS-I U1 100MB/s Read Full HD & 4K UHD Memory Card with Adapter (MB-ME64HA)
Customer Reviews:
Upon opening the package, I became somewhat suspicious as to whether this was a fake or not. I bought (shipped and sold by), and yet I did not feel completely comfortable with the purchase. | The reasoning is because of the weird labels that were stuck on top of the original packaging, obscuring the wording underneath. Upon removing the stickers it appears that the manufacture had revoked some of the previous claims on it. I checked the serial number and it check out to be the correct one for the SD card that was sent to me. | So far the card works without any issues, I advise everyone else to exercise caution when purchasing SD cards and ensure that the serial numbers match what you bought.