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.
MaxTool via eBay offers the Durostar Eco-Shredder Chipper, model no. ES1600, for $159.99 with free shipping. That's the lowest price we could find by $59. It features a 2-horsepower motor and three-cycle shredding.