MCU: ESP32(main) / ESP8285(aux /as ESP backpack), RF chip: SX1281IMLTRT, Brand: Radiomaster, Item: Ranger Micro Module, Regulatory Domain: ISM2400.
Basically copy coupon, view price history or create e-mail price alert. 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 and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I couldn’t find any coupon for this product on latest product update. Sorry, but there’s no price history 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!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGRADIORU, BGToys8, BGSaleFeb8, BGMatt2022, BG589b2e
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Radiomaster Ranger Micro 2.4GHz ExpressLRS RC RF Module ($46.99)
Price history and price alert
Price history is not available for this item (not enough database records)! The lowest price was $45.99 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)).