According to my DB the lowest price is $47.99 for Instant Water Heater 220V 3500W (in Banggood). Get coupons, create price alert or check price history out! What is the best price?
Latest price update (UTC time):
Instant Water Heater 220V 3500W Mini Electric Tankless Hot Water Heater Bathroom Kitchen Washing LCD Display for Shower Bathroom – White EU
Banggood ($47.99)
Banggood warehouse is located in China. I couldn’t find any coupon for this product on latest product update. Isn’t it too expensive? Hmmm, price is higher than average (which is $46.49 right now), so better set price alert down below…
Link: Banggood product page
Price: $47.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGaf452d
(I don’t think these’re gonna work, but you can try ’em out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for Instant Water Heater 220V 3500W.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).