Weight: 10g, Brand name: MENACE, Frequency range: 5645-5945 Mhz, (Check polar plot comparison invader actual angular db), Connector: SMA, Model: Pico, Beam Width: 61* at -3db points, Gain: 9.4dBi, Dimensions: 37*33.6*19.2mm.
You can create price alert here, copy coupons and view price history. You probably want to know what is the best price?
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 price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($40.37): BGGAL8
2. ($40.37): BGJON8
3. ($40.37): BGRCParts8
4. ($40.37): 8Couponsde
just apply this code 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): BGMPico, 0e7f33, BGOTC21, FBCOUPON1, BGandrea6875, Parts8, BGCuponation10, BGDAVIS, Tabby20, BG1efeb0
(probably won’t work, but you can try them out)
Price history and price alert
Check out price history chart (for all/most countries) for MENACE Pico FPV Antenna. The lowest price was: $22.3.
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)).