Just check coupons out (with price alert and history). Do you want to know what the best price is?
Video file format: MP4, Battery Capacity: 600mA, Video Encode: H264/H265, Image Sensor: 1/2.3inch HDR Sensor, Recording time: 4K/60fps (30min), Main Resolution: 4K/60fps /4K/30fps(4/3) /2.7K/60fps /2.7K/30fps(4/3) / 1440P/60fps /1080p/120fps., Camera Bitrate: Max 100M bitrate, Audio: support, weight: 60g, Power input: Type-C /2s-6s BEC /Magnet, wifi: support, Model: CADDX Walnut, FOV: 150”, Dimension: 38mm*36mm, waterproof: IP64, SD card: Max 256G, LANGUAGE: Auto, Image Rotate: support, EIS: Gyroflow supported
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 China.
Link: Banggood product page
1. ($181.15): BGToys8
2. ($181.15): BG8OFFCOUPON
apply code in your basket (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): BGGutscheine
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Here is price history (for all/most countries) for CADDX Walnut RC Camera.
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)).