Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
white backlight., Band: 142, Display mode: Transflective STN positive type, Transmitter Weight: 392g, Certificate: CE0678, Transmitter Size: 174x89x190mm, On-line update: Yes, Model Type: Glider/Heli/Airplane, Channels: 6 Channels, 128*64 dot matrix VA73*39mm, RF Range: 2.40-2.48GHz, RF Power: Less Than 20dBm, Model Memories: 20, Charger Port: No, Type: Mode 2 (left hand throttle) with color box, Output: PPM, Control Range: 500m, DSC Port: PS2, Color: Black, 2.4ghz System: AFHDS 2A and AFHDS, FCC, Code Type: GFSK, Low Voltage Warning: Less than 4.2V, Package Weight: 628g, ANT length: 26mm*2(dual antenna), Power: 6V 1.5AA*4 (Not Included), Bandwidth: 500KHz, Sensitivity: 1024, Package Size: 23.5×21.2×10.6cm
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($60.28): BGRADIORU
2. ($61.62): BGRCParts8
3. ($61.62): hoNEYbGdeAlS
4. ($61.62): DealBGimpact
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGI6A8, 2019SPEDM, BGFlysky, BGss11%fly, Parts8, BGaDmITAd, BGCITYADS2019, BGVDay10%off, BGFS12, BGFKY11, bGhOnEy10, BGflysky11, BGSS10%SW, bgshOOp10, BGRC902, BGRCRR9, 7d18f7, BGCuponation10, BGDAVIS, BGradio9, BG70e5fc, BG1efeb0, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – FlySky i6 FS-i6 RC Transmitter A8S [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for FlySky i6 FS-i6 RC Transmitter A8S.
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)).