Basically copy coupon, view price history or create e-mail price alert. 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 coupon and price update (UTC):
Type: Wireless, Wi-Fi Transmission Standard: 802.11n, Size: 8x5x9.3cm/3.1x2x3.7inch, Distance: Outdoors 300m / Indoor 100m (According to the Actual Environment Change), 2.4G Wi-Fi Transmission Rate: 300 Mbps, Relative Humidity (Operational): 10%~90% / noncondensing, Maximum data rate: 300Mbps, Standards and Protocols: Wi-Fi 802.11g / Wi-Fi 802.11b / Wi-Fi 802.11n, Relative Humidity (Storage): 10%~90% / noncondensing, Frequency range: 2.4-2.4835 GHz, Support 2.4 GHz WLAN networks, Operating Temperature: 0ºC~40ºC, Storage Temperature: 10~70ºC, Color: White, Voltage: 110-240V, Wired Transfer Rate: 10/100 Mbps
Banggood
Banggood warehouse is located in Europe 
. I don’t really know if this price is reasonable, coz there’s no price history in my DB.
Link: Banggood product page
1. ($15.46): BGJUNEGSG9
2. ($15.97): BG00c906
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BANGGOODSD, 00c906, ADMITAD2212, 2022ACTIESNL, Terence, Tabby20, 2203ActiesNL, BG1efeb0, 8Couponsde, BG89988f, pROMo8cuPoN
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – 300Mbps Wireless-N Wifi Repeater ($-3)
Price history and price alert
It’s a new item in our database, so I can’t create price history chart. We have saved this price in database: $6.99.
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)).