Just check coupons out (with price alert and history). What is the best price?
High CRI osram LED, Dimmable, Color temperature: 1700K-6500K, Perfect CRI, Wattage: 10W, Lifetime: 20000h
Aliexpress
There’re some similar (or not) items on Aliexpress
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Price history and price alert
Price history (for all/most countries) for Xiaomi Yeelight Bedside Lamp [Fast-08] 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)).