How much does this cost to the nearest dollar?

Awoco 72 Elegant 2 Speeds Commercial Indoor Air Curtain, CE Certified, 120V Unheated - Door Switch Included
Air curtain is NOT an air conditioner. Air curtain is a powerful fan that forcing a high speed air stream over the entrance to isolate the interior and exterior air environment. It consumes less energy than an air conditioner. Air curtains are widely installed at the entrances of supermarket, theater, hotel, food storage warehouse, residential, etc. It keeps the conditioned air inside, reduces energy costs.The magnetic switch can be simply sticked to the middle of door and door frame, no bracket needed. Works easily with most doors and windows. Automatically turn on the air curtain with door open; shut off the air curtain with door close. High speed powerful air blow is for regular 

Price is $770.00

Price: $770