$12.99 – Center frequency: 5.8 GHz, Radiation efficiency: 75%, Axial ratio: 1.05(0.38dB), Antenna gain: 14.4 dBi, Matching: S11 < -30 dB / VSWR < 1.065, Half power beam width: 30° (horizontal and vertical), Bandwidth: 660 MHz (5.47 – 6.13 GHz).
Latest update shows that 150mm Triple Feed Patch 5.8GHz 14dBi FPV Antenna costs $12.99 (in Banggood). Get coupons, create price alert or check price history out! What is best price?
Latest coupon and price update (UTC):
Banggood ($12.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Price? Awesome! This price is the best in CouponsFromChina database!
Link: Banggood product page
Price: $12.99
Additional Banggood coupons: first page and second page
This is the best price ever noted in my database!
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
(you can check these old coupons out, but these probably won’t work)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for 150mm Triple Feed Patch 5.8GHz 14dBi FPV Antenna is here. The lowest price was: $12.99.
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)).