Just check coupons out (with price alert and history). What is best price?
14.8V built-in high quality 2200mAh, 75dB noise, 500ml large dust box with 150ml water capacity, 7000Pa
Aliexpress
There’re some similar (or not) items on Aliexpress
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Latest coupon and price update (UTC):
Price history and price alert
Price history (for all/most countries) for Alfawise H6S 14.8V Vacuum Cleaner 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)).