I have just checked coupons. The lowest price I could get is 56.99 USD for Digital Zoom 4K 40MP (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Best price?
Latest coupon code price check (UTC time):
Banggood (56.99 USD)
Banggood warehouse is located in China. Coupons for DT29 2.5K UHD 8X Digital Zoom 4K 40MP Night Vision Binoculars? Nope, there’re no coupons in Banggood. What about the price? This is the best price in history according to CouponsFromChina database!
Link: Banggood product page
Price: 56.99 USD
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Aliexpress
Click here… to search for DT29 2.5K UHD 8X Digital Zoom 4K 40MP Night Vision Binoculars on Aliexpress
Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for DT29 2.5K UHD 8X Digital Zoom 4K 40MP Night Vision Binoculars is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).