Amazon offers its Prime members the Black + Decker 15.6-volt Cyclonic Action Cordless Dustbuster Hand Vac in Midnight Blue, model no. CHV1510, for $19.99 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $9.50.) That's $20 below our September mention and the lowest total price we've seen. (It's the best deal no by $6, although most retailers charge around $50.) This 15.6-volt hand vac features an extending crevice tool and brush.

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