I am monitoring price for T20 V2 ELRS 2.4GHz/915MHz and it is for 134.09 USD now (in Banggood). Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Latest coupon code price check (UTC time):
Banggood (134.09 USD)
Banggood warehouse is located in China. Is it good price? It’s a good price, isn’t it? The average is 135.23 USD. There are 2 active coupons in my database. Check it out.
Link: Banggood product page
Price without coupon: 148.99 USD
Coupon (134.09 USD): BGc4f24b
Coupon (137.07 USD): BGHONEYSP
(CouponsFromChina.com tip: 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
Old coupons (from the oldest to the newest): BGSPRING8OFF, BGf09a85
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Aliexpress
Click here… to search for Jumperrc T20 V2 ELRS 2.4GHz/915MHz Hall Sensor RC Transmitter on Aliexpress
Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for Jumperrc T20 V2 ELRS 2.4GHz/915MHz Hall Sensor RC Transmitter? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).