Aliexpress
Click here… to search for LAND Pressure Car Washer 1400W on Aliexpress
Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Well, there is one coupon available right now.
Link: Banggood product page
Coupon (170.82 USD): BGherra
(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): TS15prime, TISPrime01, Tools1, AFfbG10, Tools3, BGCITYADS2019, BG2020NS, BGVDay10%off, 2880c7, BGAFF10OFF, bGhOnEy10, BgcLuBofErtA10
(there’s a little possibility that old coupon will work)
Price history and price alert
Price history (for all/most countries) for LAND Pressure Car Washer 1400W is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).