Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (7.99 USD): BG6d08f9
Coupon (8.49 USD): BG267f9a
(CouponsFromChina.com tip: apply it 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): 8wEbgaInS5, pROMo8cuPoN
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for SAWAKE Metal 64GB USB3.0 Type-C Flash Drive.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).