Aliexpress
Click here… to search for 108cm SMA-Female Tactical Antenna For Baofeng UV-5R UV-82 on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (19.04 USD): Terence
Coupon (19.04 USD): 2203ActiesNL
Coupon (19.24 USD): BG00c906
(CouponsFromChina.com tip: apply code in your basket (cart) after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): AFfbG10, BGVDay10%off, BGAFF10OFF, BGSFT99, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BGELIG0920, BgcLuBofErtA10, BGCuponation10, 13f142, BGHONEY2110, 00c906, ADMITAD2212, 2022ACTIESNL, Tabby20
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for 108cm SMA-Female Tactical Antenna For Baofeng UV-5R UV-82? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).