Hiseeu HD 4CH 1080N DVR Kit [EU] (Backup Mode Network / USB Hard Disk, Playback 4 CH, -10℃ to 55℃, Video Compression H.264, IR Distance About 15m, Audio Compression G.711A, Humidity 95% or less, Lens 3.6mm, Video Input 4CH BNC, Resolution AHD 720P, Recording Mode Manual>Alarm>Video Detection>Timing).
Just check coupons out (with price alert and history). Do you want to know what the best price is?
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 and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. Uhm… There’s no price history (in my database) for this product right now. You can get coupon down below.
Link: Banggood product page
1. ($83.65): BG589b2e
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 and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): e2bcea, 502C6B, b6f55c, elec, 5948dc, camera15, BGSA4CH, AFfbG10, BGMPB2020, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BGELIG0920, BgcLuBofErtA10, BGCuponation10, 13f142, BGHONEY2110, BGd0b05d, BG2589f4, 00c906, BG00c906, ADMITAD2212, 2022ACTIESNL
(there’s a little possibility that old coupon will work)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: $55.99.
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)).