You can create price alert here, copy coupons and view price history. 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 code price check (UTC time):
Working temperature -20 to +50°C, Time-out Timer (TOT) 0~9 grades VOX selectable, Battery capacity 1800mAh, High/Low TX power selectable DTMF function, Rated Voltage 7.4V DC±10%, Voice companding 50 CTCSS/105 DCS, Antenna Impedance 50ohm, Output power ≦5W, Battery type Li-ion battery, Dimension (Lx Wx H) 110x 58x 32mm (Not Antenna), Channel 128CH, Weight 190g (Not Antenna), PTT & ANI ID FM radio and 25 stations storage
Banggood
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in 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, fd2bd0, elec, BGE13, AFfbG10, BGVDay10%off, BGAFF10OFF, BGTT10, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BGELIG0920, BgcLuBofErtA10, BGCuponation10, 13f142, BGHONEY2110, BGd0b05d
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for BaoFeng UV-6R Walkie Talkie? There we go.
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)).