Aliexpress
Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There are no coupons for this product in Banggood.
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BG57f957, BGb5f8b4, BG19741e, BG4ad5fa, BG36ce7b, BG42f680, BG98d6ed, BG64fdea, BG5ac134, BGcb7123, BGc73b55, BGcb1b11, BG81f9e8
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for LANKELEISI X3000PLUS 10Ah 48V 1000W Electric Bicycle.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).