Weme via Amazon offers its Weme USB Type-C / USB 3.0 MicroSD Card Reader in White for $14.99. Coupon code "2N839MDH" drops that to $7.94. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.02.) That's $7 off list and the lowest total price we could find. It features data transfer rates of up to 5Gb/s.