Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Price history and price alert
Check out price history chart (for all/most countries) for Xiaowa E202-00 Vacuum Cleaner from Xiaomi.
Price records source(s): Gearbest
Click on image to enlarge. 
You can set price alert (for Banggood).
The offer on banggood you’re linking to doesn’t look to me like the E20. Looks like Xiaowa C10 (Youth Edition) in Chinese version. It says 1600Pa and doesn’t say anything about mopping. E20 has 1800Pa and mopping.
Thanks, I will delete it (and from price history)
Unfortunately I already have ordered that one and now have problems returning it. But at least now others won’t face the same problem.
My bad then, sorry about that