Amazon offers the Wen 101-Piece Variable Speed Rotary Tool Kit for $14.72 with free shipping for Prime members. (Walmart and Home Depot charge the same via in-store pickup.) That's tied with our mention from last month and the lowest price we could find by $15. The rotary tool features a 1-amp motor, variable speeds from 8,000 to 30,000 RPM, spindle lock, and 6-foot power cord. It comes with 100 accessories, including sanders, grinders, polishers, cutters, and drill bits.