PetSafe Wireless Dog Fence (adjustable perimeter up to 3/4 acres) with 3 Collars

PetSafe wireless dog fence. New in opened box. (Opened but never used or set up as we decided we needed more space for our dogs.) Manual included.
Includes waterproof, rechargeable collars. Use as backup collars or individually for up to 3 dogs. Wireless fence kit with one receiver collar retails for $340; individual collars retail for $180 each. ($700 total). Asking $500 for all.

From manufacturer:
WIRELESS FREEDOM: This wireless fence provides a secure boundary for your pet to roam freely, with setup being a breeze and the boundary adjustable up to 3/4-acre.
COMFORT-FOCUSED: Waterproof, rechargeable receiver collar that fits dogs weighing 5 lbs and up. This wireless dog fence system offers adjustable neck sizes from 6-28 in, 5 adjustable correction levels, and a tone-only training mode, allowing you to tailor the system to your pet's unique needs.
TRAVEL-FRIENDLY: Adjustable fence allows you to set up anywhere.

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