Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
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
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
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
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGMPico, 0e7f33, BGOTC21, FBCOUPON1, BGandrea6875, Parts8, BGCuponation10, BGDAVIS, Tabby20, BG1efeb0
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for MENACE Pico FPV Antenna.
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)).