$30.99 – Operating Frequency: 2.4G ISM band, MCU: STM32F103CBT6(128K ROM, RF Power: +22dBm, Item Name: IRX4 Plus, 20K RAM), Weight: 45g, Operating Voltage: 5-14V, Operating Current: <=100mA.
I have just checked coupons. The lowest price I could get is $30.99 for iRangeX IRX4 Plus RC TX Module (in Banggood). You can create price alert here, copy coupons and view price history. Do you want to know what the best price is?
Latest price update (UTC time):
Banggood ($30.99)
Banggood warehouse is located in China. There are no coupons for this product in Banggood. Good or bad price? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal $30.59)
Link: Banggood product page
Price: $30.99
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): 20OFFRSF, 502C6B, TTxBG10, Parts8, BGaDmITAd, BGBFAFF2019, BGMD10, BGIRX4P, BGVDay10%off, BGIRX4PR, BGTT10, bGhOnEy10, bgshOOp10, BGRX4P, BGRC902, BGHALLOWEEN, BGIRX4POT, BGRCRR9, 7d18f7, BGCuponation10, BGDAVIS, BGradio9, BG70e5fc, BGGAL8, BGRCParts8, BG1efeb0, MVC8SPRING, 8BGwbg2204, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, hoNEYbGdeAlS, BGRCT10, BGJUNEGSG9, BGRADIORU, BGToys8, BGMatt2022, BG589b2e
(you can check these old coupons out, but these probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – iRangeX IRX4 Plus RC TX Module [EU] ($-3)
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.
Price history and price alert
Here is price history (for all/most countries) for iRangeX IRX4 Plus RC TX Module. The lowest price was: $29.99.
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)).