Aliexpress
Click here… to search for JKING H2C-01 2x1650W 36V 11Ah Electric Skateboard [EU] on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Europe 
. I don’t want to misguide you about the price. I don’t know if it’s good, because I don’t have enough records in my database…
Link: Banggood product page
Coupon (549.99 USD): JH2C2021
Coupon (549.99 USD): BGJINGMS
(CouponsFromChina.com tip: apply code in your basket (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): BGJK01, PICODICOM, BGH2C01, 5d1752, BGJKH2CCN11, BGJKH2CCNB5, bGpAnDacHeCk, issamjking1, BGJKH2CCN, Wholesale20, 7bcdf9, BGAFF7OFF, BG7PJKH2CCN, BGBSJKH2CCN, BGEBSC15
(these coupons are old, so probably won’t work)
Price history and price alert
There is only one database record (it was for 549.99 USD), so you can’t see price history chart.
You can set price alert (for Banggood).