Frequency Range: 2.4G, Power: ELRS version 25mW/50mW/100mW / Frsky version 100mW, Adapted Drone Type: Multirotor / Airplane, Battery: Built-in 2000mAh 1S Battery, Support BETAFPV Configurator / Most Practice Simulator, Support Protocol: Futabas S-FHSS/Frsky FCC D16/Frsky LBT D16/Frsky D8 / ExpressLRS 2.4G, LED Light: Green-Power On / Red-Warning if the voltage is lower than 3.5V / Blue-Normal, Support USB Charging / Firmware Update, Brand Name: BETAFPV, Charging Connector: USB 3.0 Type-C, Item Name: LiteRadio 3 Radio Transmitter, Channel: 8CH, 2.4G System: CC2500/SX1280, Recommend External TX Module: ELRS Nano TX Module.
Basically copy coupon, view price history or create e-mail price alert. What is 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.
Link: Banggood product page
1. ($69.82): BGRCParts8
2. ($69.82): tRaDetRaCKeR
apply it in your 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): BG12d3cd, BG1efeb0, MVC8SPRING, 8BGwbg2204
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for BETAFPV LiteRadio 3 ExpressLRS ELRS FrSky RC Transmitter? There we go. The lowest price was: $68.3.
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)).