You can create price alert here, copy coupons and view price history. You probably want to know what is the best price?
Computer Rubber Mat
Aliexpress
There’re some similar (or not) items on Aliexpress
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Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi Woodiness Mouse Pad.
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)).