Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (50.39 USD): BGCuponation10
Coupon (50.39 USD): BGAFF10OFF
(CouponsFromChina.com tip: this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGSXTLKZZ, BGNG448, BGdragonBoat, bGhOnEy10, bgshOOp10, BgoFErTaSchInA10, BGHOMEA15%, BgcLuBofErtA10
(probably won’t work, but you can try them out)
Price history and price alert
Price history (for all/most countries) for INQMEGA 1080P Smart Wifi H.264 IP Camera is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).