$37.99 – 5500W Instant Water Heater 110V/220V Portable Electric Heaters for Hot Water Shower Heating Kitchen at Home – #C.
You can get 5500W Instant Water Heater 110V/220V for $37.99 with coupon (from Banggood). You can create price alert here, copy coupons and view price history. What is the best price?
Latest coupon and price update (UTC):
Banggood ($37.99)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. What about the price? Current price is the lowest in history (according to CouponsFromChina database)!
Link: Banggood product page
Price: $37.99
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGa9657f, BGa919af
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for 5500W Instant Water Heater 110V/220V? There we go. The lowest price was: $37.99.
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)).