$39.99 – 4K Car Front Rear Dual Dash Cam (Banggood, Aliexpress: Ultra HD 4K Car Front & Rear Dual Dash Cam 140° Wide-Angle Lens G-Sensor Loop Recording GC4653 Module + 6 Glasses (the best price with coupon)).
You can get 4K Car Front Rear Dual Dash Cam for $39.99 with coupon (from Banggood). You can create price alert here, copy coupons and view price history. Do you want to know what the best price is?
Latest coupon and price update (UTC):
Banggood ($39.99)
Banggood warehouse is located in China. CouponsFromChina software could not find any coupon for this product in Banggood. I think you want to know if the price is good. Looks like this is great price. I didn’t track lower than that in CouponsFromChina database ever.
Link: Banggood product page
Price: $39.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG2c537c, BGBD125, BGSCM11, BGAMMT03, BG124578
(you can check these old coupons out, but these probably won’t work)
Aliexpress
There’re some similar (or not) items on Aliexpress
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 4K Car Front Rear Dual Dash Cam is here. The lowest price was: $39.99.
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)).