Aliexpress
Click here… to search for Xiaomi OCOOKER 12L Smart Electric Oven on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
Coupon (84.99 USD): 13f142
(CouponsFromChina.com tip: put item in your cart and apply coupon code there 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): BGHome15%, BGMNKXJP, BGHOMEAPP13, BGHOMEA13, 7d18f7, BGCuponation10
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Here is price history (for all/most countries) for Xiaomi OCOOKER 12L Smart Electric Oven.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).