Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. There are no active coupons for this product, but the price is pretty low isn’t it?
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG2eb46d, BGbc7d87, hoNEYbGdeAlS, BGHU2343, BGfd1a2f, BGae326d, BG589b2e, BGc209d1, BGMARCHSALE
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for STmagic K39 2 in 1 USB 3.0 Type-C USB Flash Drive 512GB? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).