Just check coupons out (with price alert and history). You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Frsky R9M lite Transmitter Module with R9 mini Receiver Board Combo For for Taranis X-Lite and 900MHz long range RC system | $73.68 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Modulations: PXX or CPPM (auto-detected), Upgrade Interface: Smart Port, Compatibility: R9 series, Vin Voltage Range: 4V-12.6V, External Power Supply: 4V~12V (2s Li-Battery is recommended), Telemetry Interface: Smart Port, or it will damage), (*3s Li-Battery is not recommended as external power supply
Banggood
Banggood warehouse is located in Hong Kong. We have found one coupon for this product!
Link: Banggood product page
1. ($77.39): TTxBG10
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): 10R9M, 502C6B
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for FrSky R9M 900MHz RC Transmitter Module.
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)).