When I was updating this page, then coupon price was 40.41 USD for USB3.0 to (in Banggood). Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Banggood (40.41 USD)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… What about the price? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal 22.56 USD)
Link: Banggood product page
Price: 40.41 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG6248b5, BGHONEY2110, 13f142, BANGGOODSD, 00c906, BG00c906, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, BG1e9fcc, pROMo8cuPoN, hoNEYbGdeAlS, BGJUNEGSG9, BG266c11, BGWSCYT1, BGde2f67, BG589b2e, BGc209d1, BG8FORMULAMX
(these codes were not working in latest coupon update, but you can check them out anyway)
Aliexpress
Click here… to search for MAIWO K300U3S USB3.0 to SATA Docking Station on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for MAIWO K300U3S USB3.0 to SATA Docking Station.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).