Channel 10 Channel, Control Distance 800 meters ground, Modulation Mode QPSK, Transmitter Power <100mW(PCB testing), FHSS, Channel Bandwidth 5.0MHz, Operating Voltage 8.6~15V, Operating Current <95mA, Frequency 2.4GHz ISM band(2400MHz to 2485MHz), Spread Spectrum DSSS, Adjacent Channel Rejection >38dBM, <20dBm(3 meter air testing). Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
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 price update (UTC time):
Banggood
Banggood warehouse is located in China. One coupon is available. Cool!
Link: Banggood product page
1. ($153.40): BGMatt2022
apply code in your basket (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/i1u
Old coupons (from the oldest to the newest): BGAT10, Parts8, 2019SPEDM, bgssaff9, parts8, BGaDmITAd, BGRC10, 502C6B, BGRDAT10, BGBFAFF2019, BGCITYADS2019, BGRDAT103, BGVDay10%off, BGAT102, BGTT10, bGhOnEy10, BGRDAT10CLE, BGSS10%SW, bgshOOp10, BGRC902, BGAT10OT, 7bcdf9, BGRCRR9, BGCuponation10, BGDAVIS, BGradio9, BG70e5fc, BGGAL8, BGRCParts8, Tabby20, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, hoNEYbGdeAlS, BGJUNEGSG9, BGRCT10, BGRADIORU, BGToys8, JanBGCoupon8, BGSaleFeb8, BGSaleAD, BGMARCHSALE, BGToySale
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Price history (for all/most countries) for Radiolink AT10II RC Transmitter is here. The lowest price was: $99.99.
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)).