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 (70.13 USD): 8BGwbg2204
Coupon (71.66 USD): BG00c906
(CouponsFromChina.com tip: you should apply the coupon 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): 502C6B, e2bcea, elec, 5948dc, 2019SPEDM, AFfbG10, BGBFAFF2019, BGBFCR38, 7d18f7, BGVDay10%off, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGCuponation10, 13f142, BGHONEY2110, BGd0b05d, 00c906, ADMITAD2212, 2022ACTIESNL
(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 VStarcam C16S 1080P IP Camera.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).