I have checked all old coupons and price is $131.55 for Jumperrc T20 2.4GHz/915MHz ExpressLRS ELRS Hall Sensor RC Transmitter (in Banggood). You can create price alert here, copy coupons and view price history. Do you want to know what the best price is?
Jumperrc T20 2.4GHz/915MHz ExpressLRS ELRS Hall Sensor/RDC90 Gimbal Full Size EdgeTX Radio Transmitter for FPV RC Racer Drone Airplane Car Boat – Hall Gimbal 2.4GHz
Latest price update (UTC time):
Banggood ($131.55)
Banggood warehouse is located in China. Good or bad price? Well, this price is higher than average price ($118.70) I found coupon for you. Check this out.
Link: Banggood product page
Price without coupon: $142.99
1. ($131.55): BGALL8
paste coupon code in your cart and click Apply 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): BG70ae9c, BGMatt2022, BG5f45d7, BG589b2e, BGAUGUST8, BGCAPITALOS8, BGCOUPERT8, BG0cf64d, BGBFDAY8, BGSSRC20, BGSPRING8OFF, BGHONEYSP, BG4e1221
(I don’t think these’re gonna work, but you can try ’em out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Jumperrc T20 V2 ELRS 2.4GHz/915MHz Hall Sensor/RDC90 Sensor Gimbal Full Size EdgeTX Radio Transmitter for FPV RC Racer Drone Car | $180.58 | – |
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for Jumperrc T20 2.4GHz/915MHz ExpressLRS ELRS Hall Sensor RC Transmitter.
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)).