You can create price alert here, copy coupons and view price history. What is the best price?
Video File Format MOV, Power Input DC 5-15V / DC 5V(USB), Max Micro SD Card Supported 64G(need Class 6 or above, Dimensions PCB 38*38mm/Lens Module 19*19mm, Interface Micro USB / UART, Image Resolution 2 Megapixels, TV Mode NTSC (720*480)/PAL (720*576) Switchable, recommend Class 10/UHS-I/UHS-II/UHS-III), WiFi Module Support (Removable), Video Resolution 1080@60fps/1080@50fps /1080@30fps/720@60fps, Working Current 650mA @5V / 270mA @12V
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
1. ($73.51): Parts8
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): CFadmitad, 11RC12, e2bcea, 0d0d42, 502C6B, f62884, MD15, 64a598, BGss10%ru, BGBCFPV, BGrunc15, BGBCBG10
(you can check these old coupons out, but these probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – RunCam Split 2S FPV Camera without WIFI ($-3)
Price history and price alert
Price history (for all/most countries) for RunCam Split 2S FPV Camera with WIFI is here.
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)).