You can create price alert here, copy coupons and view price history. 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 coupon and price update (UTC):
Work way: Different / same frequency signal work, Transmitter electric current: no more than 1500mA, Work temperature: -20 centigrade degrees to +60 centigrade degrees, Frequency combination: PLL frequency synthesis, UHF 400 – 520MHz, Receiver electric current: no more than 380mA, Frequency range: VHF 136 – 174MHz, Step frequency: 2.5 / 5 / 6.25 / 10 / 12.5 / 20 / 25KHz, Powered by 1800mAh Li-ion battery (included in package)
Banggood
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood).
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 502C6B, elec, AFfbG10, BGBFAFF2019, BGCITYADS2019, BGVDay10%off, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BGELIG0920, BGTT10, BgcLuBofErtA10, e31789, d594a3, 0267c5, cf739d, BGE13, 7ffc14, FBCOUPON1, BGCuponation10, BGHONEY2110, 13f142, BGd0b05d, BG2589f4, 00c906
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for BAOFENG UV-5R Radio Walkie Talkie.
Price records source(s): Gearbest, 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)).