Color Black, Interface USB 3.0, Chipset Realtek 8812BU, Antenna Type 2dBi antenna, Wireless Standards IEEE 802.11ac / IEEE 802.11a / IEEE 802.11n / IEEE 802.11g / IEEE 802.11b, Size 42 * 19 * 9mm, Frequency 2.412~2.484GHz/5.15~5.825GHz, Model 6B14, Material ABS material + USB iron head.
Just check coupons out (with price alert and history). Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
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.
Link: Banggood product page
1. ($16.92): 8Couponsde
2. ($17.10): Terence
3. ($17.10): 2203ActiesNL
4. ($17.29): BG00c906
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): 00c906, ADMITAD2212, 2022ACTIESNL, Tabby20, BG1efeb0
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for 1300Mbps USB3.0 WiFi Adapter 802.11ac. The lowest price was: $16.55.
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)).