$75.34 – Accurate control – 2.4GHz AFHDS 2A system, 4096 high resolution, About 500 – 800m long control distance, Low voltage alarm (lower than 4.2V), 3 inch touchscreen interface, switchable control modes.
You can get FLYSKY FS-i6S Transmitter for $75.34 using coupon code (in Banggood). Check coupons or create price alert down below. Best price?
Latest coupon code price check (UTC time):
Banggood ($75.34)
Banggood warehouse is located in China. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood. Price? Well, this price is higher than average price ($57.70)
Link: Banggood product page
Price: $75.34
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): aff7off, Parts8, BGFS6S, BGFSI6S, BGaDmITAd, BGCITYADS2019, BGVDay10%off, BGFS12, BGFS610, BGFKY11, Email5, bGhOnEy10, BGflysky11, bgshOOp10, 7d18f7, BGRCRR9, BGCuponation10, BGI6SMR, BGDAVIS, BGradio9, BG70e5fc, BGGAL8, BGRCParts8, Tabby20, BG1efeb0, 8Couponsde, MVC8SPRING, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, hoNEYbGdeAlS, BGRCT10, BGJUNEGSG9, BGRADIORU, BGSaleAD, BGMatt2022, BGMARCHSALE, BG589b2e, BGAUGUST8, BGCAPITALOS8, BGCOUPERT8, BGBFDAY8, BGNEWYEAR8, BGESJY8, BGALL8
(there’s a little possibility that old coupon will work)
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
Check out price history chart (for all/most countries) for FLYSKY FS-i6S Transmitter. The lowest price was: $51.91.
Price records source(s): Gearbest, 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)).