Aliexpress
Click here… to search for Blueendless M.2 SSD Hard Drive Enclosure Type-C 3.1 Gen2 to M.2 NVME/SATA on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
Coupon (20.23 USD): BGWSCYT1
(CouponsFromChina.com tip: coupon code has to be applied in shop’s 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): Cuponation9, 9OFFSUMMER
(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 Blueendless M.2 SSD Hard Drive Enclosure Type-C 3.1 Gen2 to M.2 NVME/SATA.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).