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 coupon and price update (UTC):
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 (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
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: 549.99 USD.
You can set price alert (for Banggood).