Just check coupons out (with price alert and history). What is the best price?
External Micro SD slot: Card Included, Voltage: DC7-8.4V, Mode: Mode2, 2×18650 (tray included), Weight: 736g (without battery), Current: 400mah (excluding external module), Size: 183*212*66 mm, Touch Panel Ready (requires OpenTX 2.4 and Upgrade Panel Sold seperatly), 21700 7.4v 2s Pack or 7.4v 2s Lipoly (Batteries not included), Channel: 16CH, 2x External UART Expansion Ports, Battery Compartment: 25*52*97mm
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Radiomaster TX16S MKII Edition 2.4G 16CH Hall Sensor Gimbals Open TX Transmitter with and Leather RC Radio | $647.71 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($287.99): BGRCT10
2. ($294.39): BGGAL8
3. ($294.39): BGRCParts8
4. ($294.39): hoNEYbGdeAlS
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): Parts8, bGhOnEy10, BGRDT16S, BGGF139, BGTX16SJP, BGSS10%SW, BG14TX16, BGT16SP, BGT16S15, BGRRFC2, BGTXEN13, bgshOOp10, BGTX16AS, BGTX16ASYB, BGRC902, BGTXAFF11, BGTXZH10, BGTXRU, BG RM16FB, BGRM16FB, BGRDTXOT, BGSP16SOTDJ, BGTX16SDB, BGTX16S11, BGESRMTX16S, BGTX16SAU, BGTX16SDBYB, BGTX16SPDJ2, BGTX16SD, BGTX16DC, BGTX1612, BGSTUDENT10, BG16SDYB, BGTX16SDE, BGTX162020, BG16YJA, 7bcdf9, BG16YJA2, BGESRMTX16S1, BGTX16CJ, BGTXRUDJ, BGTX16CJYB, BGESRMTX16S2, BGTXRU16, BGRCRR9, BGTX16WK, BGRMTXS3, BGTXMR6, BGTX16MR, BGCuponation10, BGCZ16AF, BGTXMR10, BGDAVIS, ATX16SES, BGAP16RC, BGRRCB10, BG50f1ca, BGca5a76, BG84701a, BGbbb67d, BG655885, BG31bfee, BG11c7e2, BGd8db90, Cholldrons89, BGcd828d, BGf8a01d, BGb03018, BG3203cb, BG939ef6, BGd5ef18, BG4c3522, BG0dc698, BGradio9, BGb1291b, BG495a87, BG178638, BGf8f582, BG0699a7, BG879dd7, BG3d7c99, BG7dd546, BG70e5fc, BGeeb016, BGEEB016, BGa02e74, BG27af08, BG5423f6, BG791d57, BG4a846b, BG7ae7f6, BGbc1210, BGe0690f, BGa6b9b9, BGHU1687, BG06054c, 2203ActiesNL, BGed6d47, BG22affa, BGa36d71, BGbf1cf9, BGc32d3b, BG1efeb0, MVC8SPRING, BG2b8957, 8BGwbg2204, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BG8RCToy, BGJUNEGSG9, DealBGimpact, BGRADIORU
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 3 another warehouse/versions!
1. China – RadioMaster TX16S TBS MicroTX RC Transmitter ($-3)
2. Europe – RadioMaster TX16S TBS MicroTX RC Transmitter [EU] ($-3)
3. Europe – RadioMaster TX16S Hall Sensor RC Transmitter [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for RadioMaster TX16S Hall Sensor RC Transmitter.
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)).