Frequency Range: 5500-6000MHz, Brand: Flywoo, SWR: ≤1.5 (ON 5.8GHz), Gain: 3dbi, Item Name: ATOMIC 5.8GHz RHCP MMCX 90Degree FPV Antenna, Axial Ratio: 0.7, Cable: RG1.37, Interface: MMCX 90Degree, Mode for Analog Version FPV System, Polarization: RHCP.
Price history, coupons and price alert are available on this page. Do you want to know what the best price is?
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.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($10.94): BGGAL8
2. ($10.94): BGRCParts8
3. ($10.94): MVC8SPRING
4. ($10.94): 8BGwbg2204
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BG103b13, Parts8, Tabby20, BG1efeb0
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for Flywoo ATOMIC 5.8GHz 3dBi RC Tube RHCP MMCX Antenna. The lowest price was: $10.7.
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)).