1200Mbps 5Ghz 2.4Ghz Dual USB Wifi Adapter (Banggood, Aliexpress: 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 (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. We have found one coupon for this product!
Link: Banggood product page
1. ($23.17): TTxBG10
just apply this code 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
Price history (for all/most countries) for 1200Mbps 5Ghz 2.4Ghz Dual USB Wifi Adapter is here. The lowest price was: $21.67.
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)).