Just check coupons out (with price alert and history). Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Weight: 33g, Size: 89 * 23.6 * 18.5mm, Cable Length: 0.24m, Item: 4 ports USB3.0 Hub;, Interface: USB3.0 * 4, Color: White, Material: PC;, Transmission speed: 350MB/S, Model: XMFXQ01QM;, 1 * Stand-by power supply interface;
Banggood
Banggood warehouse is located in China. CouponsFromChina software could not find any coupon for this product in Banggood.
Link: Banggood product page
Price: $-3
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 and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): AFfbG10, BGJASDH, BGHUD75194, BGCPP083, BGBFAFF2019, BGPEPPER1, BGCITYADS2019, BGkdji44, 13f142, BGalibuy10, BGVDay10%off, BGXMHB0, BGAFF10OFF, BGCuponation10, BGXM4PH, BGHONEY2110, BG5eefe3
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi 4 Ports USB3.0 Hub.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).