Aliexpress
Click here… to search for HIMO Z20C 10Ah 36V 250W Folding Electric Bike [EU] on Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I can’t tell you if this price is good – not enough records in my database, so I won’t judge.
Link: Banggood product page
Coupon (879.99 USD): BGissamZ20C
Coupon (879.99 USD): Z20C2022
Coupon (889.99 USD): Z20C2021
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply 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): 7bcdf9, BGEBSC15, BGZ20CMS
(there’s a little possibility that old coupon will work)
Price history and price alert
There is only one database record (it was for 899.99 USD), so you can’t see price history chart.
You can set price alert (for Banggood).