Cable: Semi-rigid RG402, Polarization: Left Hand Circular (LHCP), Size: 190mmx 17.5mm, Radiation Efficiency: 98%, Axial Ratio: 1.0 (near perfect), Connector: Right-Angle SMA, Gain: 4.7dBiC, SWR: <=1.5: 1, Bandwidth: 5.3GHz-6.2GHz, Weight: 17g. 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 coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Price history and price alert
Check out price history chart (for all/most countries) for Lumenier Double AXII 2 SMA 5.8GHz 4.7dBiC FPV Antenna LHCP. The lowest price was: $38.93.
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)).