Amazon offers the Dyson Tangle-Free Turbine Tool Vacuum Attachment, model no. 925067-06, for $38 with free shipping. (Walmart charges a few cents more.) That's tied with last week's mention as the lowest total price we could find by $12. It's compatible with all Dyson upright and canister vacuums from DC23 onward (except DC24 and cordless models). Features include elliptical counter-rotating heads with integrated brushes and an articulating base plate.
Walmart offers the Lasko 20" Wind Machine Indoor Pivoting Floor Fan for $29.76. Opt for in-store pickup to dodge the $5.99 shipping charge. That's the lowest price we could find by $10. Features include a pivoting head, efficient running, and carry handle.