VStarcam CS66Q-X18 4.0MP Smart IP Camera (Banggood, Aliexpress: 1 * Cross Screwdriver, 1 * Screws, 1 * Camera, 1 * Power Adapter, 1 * Waterproof Accessories, 1 * Manual (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. Best price?
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.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
1. ($184.56): BGSmart6
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/feV
Old coupons (from the oldest to the newest): BG428dbe, ADMITAD2212
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for VStarcam CS66Q-X18 4.0MP Smart IP Camera. The lowest price was: $127.66.
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)).