Amazon offers the Chemical Guys Porter Cable Complete Detailing Kit for $144.03 with free shipping via the instructions below. That's the lowest price we could find by $56. It includes a variable speed polisher, counter weight, wrench, backing plate, cutting pad, polishing pad, three finishing pads, pad cleaner, pad conditioner, and three microfiber towels. To get this deal:
  1. View the Chemical Guys Porter Cable Complete Detailing Kit for $221.59
  2. clip the 20% off coupon on the product page to cut it to $177.27
  3. add it to your cart via Subscribe & Save for a final price of $144.03
Be sure to cancel Subscribe & Save once your order ships or you'll be billed for subsequent shipments.

Update: Specs corrected.