I have just checked coupons. The lowest price I could get is 49.99 USD for CM639 10-in-1 (in Banggood). Price history, coupons and price alert are available on this page. Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Banggood (49.99 USD)
Banggood warehouse is located in China. You probably want to know if this is a good price. Good news! This is great price, coz it’s the lowest in CouponsFromChina database! There is one great coupon!
Link: Banggood product page
Price without coupon: 50.99 USD
Coupon (49.99 USD): BG60fca6
(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
Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for UGreen CM639 10-in-1 USB3.0 Hub Docking Station.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).