You can get RC TX for 43.69 USD with coupon (from Banggood). You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Latest coupon and price update (UTC):
Banggood (43.69 USD)
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment. The question is – is it a good price? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal 30.59 USD)
Link: Banggood product page
Price: 43.69 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
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
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – iRangeX IRX4 Plus RC TX Module [EU] (-3 USD)
Aliexpress
Click here… to search for iRangeX IRX4 Plus RC TX Module on Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for iRangeX IRX4 Plus RC TX Module is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).