Aliexpress
Click here… to search for AlfaBot T30 150W Spray Mopping Machine Vacuum Cleaner on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (353.83 USD): 8Couponsde
Coupon (353.83 USD): MVC8SPRING
Coupon (357.68 USD): 2203ActiesNL
Coupon (361.52 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): BGCNATU3, BG10OFFAFF1, BANGGOODSD, BGCNAT36, 00c906, ADMITAD2212, BGCityads10, Terence, Tabby20, BG1efeb0
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Price history (for all/most countries) for AlfaBot T30 150W Spray Mopping Machine Vacuum Cleaner is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).