Hayneedle offers the Dyson V6 Origin Cordless Stick Vacuum in Blue/Silver for $159 with free shipping. That's tied with last week's mention as the lowest price we've seen in any condition. (It's the best price we could find today by $40.) It features a motorized cleaning head, push-button bin emptying, and up to 20 minutes of cleaning per charge.
WD-40 is handy in a lot more situations than you likely realize.