Aliexpress
Click here… to search for AUGIENB SC-003 1600W Sous Vide Cooker on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
Coupon (70.49 USD): BG589b2e
(CouponsFromChina.com tip: just apply this code 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): BG4d9216, MVC8SPRING, BGce30be, 8BGwbg2204, BGf9297a, BG0db6bc, BG33ecef, BG5a0905, BGa1f035, BG3bc144, BGbe66f5, BG74f1c8, DealBGimpact, Cuponation9, BGd60667, BGAHPU13, BG8ReviTrage, BGeaf456
(these coupons are old, so probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for AUGIENB SC-003 1600W Sous Vide Cooker.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).