Aliexpress
Click here… to search for OV 64GB Class 10 MicroSD Card on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
Coupon (10.79 USD): AFfbG10
(CouponsFromChina.com tip: this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): 69c7f0, 502C6B, TTxBG10, 2019SPEDM, BGcdc1d6, BG3CSUM, bgssaff9, BG67V8Nl9, BGBFAFF2019, BGCITYADS2019
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Here is price history (for all/most countries) for OV 64GB Class 10 MicroSD Card.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).