Basically copy coupon, view price history or create e-mail price alert. Best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
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Latest coupon code price check (UTC time):
Rate frequency: 50/60Hz, Rate voltage: 220 – 240V, Running time: 60 minutes, Battery volume: 600mAh, Battery: built-in Li-ion battery, Charging time: 8 hours, Rate power: 2W
Price history and price alert
Here is price history (for all/most countries) for FLYCO FS362EU Electric Shaver [Fast-23].
Price records source(s): Gearbest
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)).