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Aliexpress
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Latest price update (UTC time):
Built-in 6000mAh Li-ion battery, 42x 42x 78mm caving space, Laser lifetime up to 100000 hours, Power: 1500mw
Price history and price alert
Price history (for all/most countries) for NEJE DK-BL 1500mw Laser Engraver [Fast-23] 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)).