Price history, coupons and price alert are available on this page. What is best price?
RF output power: , 50Hz/150Hz/250Hz/500Hz (2.4GHz), XT30 port: 5V~12V / recommend 2S(8.4V) battery / DO NOT support 3S(12.6V) or above, Input voltage: 5V~12V, 100mW/250mW/500mW (915MHz/868MHz), Weight: 125g, 25Hz/50Hz/100Hz/200Hz (915MHz/868MHz), Frequency bands (Micro RF Module 915MHz/868MHz version): 915MHz FCC/868MHz EU, USB port: Type-C, Brand Name: BETAFPV, Item Name: ELRS Micro TX Module, 25mW/50mW/100mW/250mW/500mW (2.4GHz), Frequency bands (Micro RF Module 2.4G version): 2.4GHz ISM, Version: 2.4GHz/868MHz/915MHz (500mW)/2.4GHz (1W), Packet refresh rate:
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I can’t tell you if this price is good – not enough records in my database, so I won’t judge. We have found one coupon for this product!
Link: Banggood product page
1. ($41.39): BGRADIORU
coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGRCParts8, Tabby20, BG1efeb0, 8Couponsde, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, hoNEYbGdeAlS, BGToys1, BGRCT10, BGJUNEGSG9, DealBGimpact
(probably won’t work, but you can try them out)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – BETAFPV ExpressLRS ELRS OLED RC Micro TX Module ($-3)
Price history and price alert
Price history is not available for this item (not enough database records)! The lowest price was $39.99 though.
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)).