Just check coupons out (with price alert and history). What is the best price?
12 inch Wheels, Folding Design, Smart Controlling, White
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Price history and price alert
Price history (for all/most countries) for F-wheel DYU Electric Bike White [Fast-27] is here.
Price records source(s): Gearbest
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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)).