BETAFPV ExpressLRS ELRS OLED RC Micro TX Module (Banggood, Aliexpress: 50Hz/150Hz/250Hz/500Hz (2.4GHz), USB port: Type-C, RF output power: , 25Hz/50Hz/100Hz/200Hz (915MHz/868MHz), Frequency bands (Micro RF Module 915MHz/868MHz version): 915MHz FCC/868MHz EU, Input voltage: 5V~12V, Version: 2.4GHz/868MHz/915MHz (500mW)/2.4GHz (1W), Packet refresh rate: , Brand Name: BETAFPV, Item Name: ELRS Micro TX Module, XT30 port: 5V~12V / recommend 2S(8.4V) battery / DO NOT support 3S(12.6V) or above, 25mW/50mW/100mW/250mW/500mW (2.4GHz), Weight: 125g, Frequency bands (Micro RF Module 2.4G version): 2.4GHz ISM, 100mW/250mW/500mW (915MHz/868MHz) (the best price with coupon)).
Just check coupons out (with price alert and history). Let’s see what best price is ATM.
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. I don’t think there is an active coupon right now – at least in my database.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): BGRCParts8, Tabby20, BG1efeb0, 8Couponsde, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, hoNEYbGdeAlS, BGToys1, BGRCT10, BGJUNEGSG9, DealBGimpact, BGRADIORU
(there’s a little possibility that old coupon will work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – BETAFPV ExpressLRS ELRS OLED RC Micro TX Module [EU] ($-3)
Price history and price alert
Check out price history chart (for all/most countries) for BETAFPV ExpressLRS ELRS OLED RC Micro TX Module. The lowest price was: $39.99.
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)).
. Uhm… There’s no price history (in my database) for this product right now. There is one great coupon!