As a reader discovered, PetSafe offers its factory-refurbished PetSafe Wireless Pet Containment System, model no. PIF-300, for $209.95. Coupon code "PETS10" cuts it to $188.95. With free shipping, that's $71 under the lowest total price we could find for a new unit. This portable system features a transmitter which communicates with your dog’s receiver collar and helps keep him in the area you designate. It's for use with dogs of 8 lbs. or more and features five adjustable levels of static correction, safety shut-off, and waterproof receiver collar. A 90-day PetSafe warranty applies.