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 now by $6, although most retailers charge around $50.) This 15.6-volt hand vac features an extending crevice tool and brush.

Note: This vacuum has a score of 2.5 stars out of 5 on nearly 5,000 customer reviews at Amazon, with 41% being 1 star. The majority of complaints mention its poor battery life, so purchase with caution.