Latest update shows that Xiaomi Router AX3000T Mesh Gigabit Repeater costs $45.99 (in Banggood). You can create price alert here, copy coupons and view price history. Best price?
Latest price update (UTC time):
Xiaomi Router AX3000T WiFi 6 Mesh Technology 2.4GHz 5GHz MiWiFi ROM Efficient Wall Penetration Protection Repeater Signal Amplifier
Banggood ($45.99)
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now… Is it expensive? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal $34.08)
Link: Banggood product page
Price: $45.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGREUAX3000T, BGREUXMR1, BG9d1236
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Router AX3000T Mesh Gigabit Repeater.
Price records source(s): 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)).