Just check coupons out (with price alert and history). What is best price?
Voltage: DC7-8.4V, Channel: 16CH, External Micro SD slot: Card Included, Current: 350mah (NO CRSF), 2x External UART Expansion Ports, Mode: Mode2 (Left Hand Throttle), Weight: 820g (with 2x 18650 batteries installed), Battery: 2x 18650 (tray supplied) or 2S lipo (batteries not included), Item Name: TX16S Transmitter, Size: 180*190*58 mm
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):
Banggood
Banggood warehouse is located in Europe 
. CouponsFromChina software could not find any coupon for this product in Banggood. I can’t tell you if this price is good – not enough records in my database, so I won’t judge.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): Parts8, bGhOnEy10, 7bcdf9, BG16S, BGGF109, BGSS10%SW, BGTX16GG, bgshOOp10, BGJB16S, BGRC902, BGJB16SYB, BGJBTX16, BGJB16OT, BGJBTX16AFF, BGJB16RU, BGJB16WK, BG11PP12, BGJB16YB, BGJB16NCB, BGJB16SJA, BG16RUDJ, BGRRCB10, BG16CJYB, BGRCRR9, BGCuponation10, BGCZ16BS, BGPR16, BGDAVIS, BGAPRC16, BGfbaecb, BG9f1c4e
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – RadioMaster TX16S RC Transmitter ($-3)
Price history and price alert
Price history is not available for this item (not enough database records)! The lowest price was $116.99 though.
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)).