Eastwood offers its Eastwood 6" Dual-Action Palm Sander, model no. 13748, for $37.99. Coupon code "1NT1078" bags free shipping. That's tied with our June mention, $2 off, and the lowest total price we could find. It features adjustable speed control, up to 10,000 RPM and includes a backing pad, air fitting, and flat wrench.