Axial Ratio: Close to 1, Model: Lollipop 3 Stubby, Color: Red, SWR: <1.2 at Center Frequency, Polarization: RHCP/LHCP (Optional), Band Width: 5.5G~6GHz, Center Frequency: 5.75GHz, Quantity: 2pcs Antennas, Gain: 2.5dBi, Radiation Efficiency: 98%, Case Material: PC+ABS, Connector: RP-SMA Male, Dimension: 17*23mm. Just check coupons out (with price alert and history). 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. ($18.21): BGGAL8
2. ($18.21): BGRCParts8
apply code in your basket (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): BGasFFT, BGRC902, bGhOnEy10, BGTT10, Parts8, BGFoxeer5, BGCuponation10, BGDAVIS
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for 2Pcs Foxeer Lollipop 3 Stubby FPV Antenna. The lowest price was: $13.9.
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)).