Price history, coupons and price alert are available on this page. What is best price?
250W motor, 30km/h max speed, 7.8Ah Li-ion battery, max 40km mileage
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($429.99): BGFDD1CN
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 820c20, PICODICOM, 686e69, BGFDD1CN19, bGpAnDacHeCk, 7bcdf9
(these coupons are old, so probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – FIIDO D1 Electric Bike 7.8Ah White ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for FIIDO D1 Electric Bike 7.8Ah Black? There we go.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).