$399.00 – Charging Method: Support 12V/9V/5V, Battery Life: 4 Hours, Buit-in Battery: Li-ion battery (4800mAh-7.2V), Item Name: Remote Controller Built-in Screen, Audio Output Interface: Standard 3.5mm Audio Port, Max Control Distance: Roklink 10-15KM, Operating Frequency: 2400-2483MHZ, Weight: 0.98kg, Model: FMYKQ02A8, Brand Name: FIMI, Working Environment Temperature: -10-60℃, Item NO.: TX10A, Storage Space: ROM 16GB + Expandable, Charging Power: 18W, Dimensions: 191x 148 × 53mm, Charging Environment Temperature: 0-40℃, Video Output Interface: HDMI, Charging Time: 2.5 Hours (using a 9V USB Charger).
Check if there is $399 coupon for FIMI TX10A RC Remote Controller Transmitter RokLink (in Banggood). Go down and check coupons out. Remember to check price history if it is available. Let’s see what best price is ATM.
Latest price update (UTC time):
Banggood ($399.00)
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood. Isn’t it too expensive? From what I can see this price is higher than average price ($309.28).
Link: Banggood product page
Price: $399
Additional Banggood coupons: first page and second page
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – FIMI TX10A RC Remote Controller Transmitter RokLink [EU] ($-3)
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
Price history (for all/most countries) for FIMI TX10A RC Remote Controller Transmitter RokLink is here. The lowest price was: $269.
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)).