Just check coupons out (with price alert and history). What is best price?
7.0x 4.0x 0.7 in. (with external antenna), Interface: USB 3.0, RoHS, Button: WPS Button, Antenna: Two 5dBi External Antenna, Storage Humidity: 5%~90% non-condensing, Chipset: Realtek RTL8812AU, Dimensions (Wx Dx H): 2.5x 1.0x 0.7 in. (without external antenna), Storage Temperature: -40℃~70℃ (-40℉~158℉), Operating Temperature: 0℃~40℃ (32℉~104℉), Environment: , Operating Humidity: 10%~90% non-condensing, Certification: CE
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 and price update (UTC):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
1. ($23.17): TTxBG10
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 502C6B
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for 1200Mbps 5Ghz 2.4Ghz Dual USB Wifi Adapter? There we go.
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)).