Just check coupons out (with price alert and history). Do you want to know what the best price is?
– Frequency range: UHF: 400 – 470MHz, – RF rated power: 5W, – Battery: rechargeable 1800mAh Li-ion battery (included in package)
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):
Price history and price alert
Do you need price history chart (for all/most countries) for BAOFENG 999S Walkie Talkie US Plug? There we go.
Price records source(s): Gearbest
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)).