Lens HD lens, Exposure control automatic, Product Type HD webcam, Interface type USB2.0, Model C500, System support “For MacOS 10.6 / Windows7 / Windows8 / Windows10 or higher; For Chrome operating system / Android 5.0 or higher”, White balance automatic, Microphone omnidirectional dual microphone, Dynamic resolution 3840×2160, Applicable type LCD monitor / desktop computers / notebooks, Camera pixels 8 million pixels, Product size 136×38×37mm, Brand RAPOO, Color black, Focus mode auto focus (fixed focus), Maximum frame rate 30FPS.
Basically copy coupon, view price history or create e-mail price alert. Best price?
Aliexpress
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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. Too bad there’s no coupon right now in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGa96a9b, BGHONEY2110, 13f142
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Price history (for all/most countries) for Rapoo C500 Webcam 4K is here. The lowest price was: $62.99.
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)).