Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Dimension 125x 56x 31mm (not include antenna), Intermodulation 50dB, Squelch Sensitivity <0.2μV, Current ≤100mA, Antenna Professional antenna, Operation Voltage DC7.4V, Frequency Range 400-480MHz/136-174MHz, The maximum deviation ≤±5KHz, Squelch current 20mA, Antenna impedance 50_x005fΩ, Channel Capacity 999, Residual radiation <-60dB, Audio Power 500mW, Current ≤1000mA, Transmit Output power 10W, Receiver Sensitivity <0.25μV(12dB SINAD)
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
10pcs Air Acoustic Tube Headset Earpiece Walkie Talkie Accessories For Baofeng UV5R UV82 888S KD-C1 Zastone A19 A9 l2000 v77 | $18.53 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. I couldn’t find any coupon for this product on latest product update.
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): BG11PP12, BgcLuBofErtA10, BGAFF10OFF, BGCuponation10, 7bcdf9, BGHONEY2110
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for ZASTONE A19 10W Walkie Talkie.
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)).