Use Rockler coupon code V2478 during checkout.
Rockler.com has the Shop-Vac Air Cleaner on sale for $99 after instant savings. Add the coupon code, and the price drops to $79. As a price comparison, Amazon.com sells it for $129. It features an induction motor for quiet operation, and moves 235 CFM of air, filtering down to 5 microns. Shipping is free.