Right now the best price with coupon code for Feed Patch 5.8GHz is 17.99 USD (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Latest coupon and price update (UTC):
Banggood (17.99 USD)
Banggood warehouse is located in China. There are no coupons for this product in Banggood. The question is – is it a good price? It’s a good price, isn’t it? The average is 23.03 USD.
Link: Banggood product page
Price: 17.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): Parts8, BGJON8, BGRCParts8, Tabby20, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, BGRCT10, BGf610c0, BGJUNEGSG9, BG8ReviTrage, Cuponation9, BGToys8
(these coupons are old, so probably won’t work)
Aliexpress
Click here… to search for 150mm Triple Feed Patch 5.8GHz 14dBi FPV Antenna on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for 150mm Triple Feed Patch 5.8GHz 14dBi FPV Antenna.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).