How much does this cost to the nearest dollar?

Dynasty Hardware Push Bar Panic Exit Device Aluminum, with Exterior Lever, Keyed Alike 4 Pack
Product's actual size 31 inches, Fits Doors 30 through 36 Wide - Can be cut to size. Reversible, non-handed - Panic Hardware - With Exterior Keyed Lever - Aluminum Finish - Panic Device Dynasty Hardware 500 Series Panic Device With Dogging Feature Keyed alike 4 pack Limited - Lifetime Factory Warranty Material Steel, Brand Dynasty Hardware, Color Sprayed Aluminum, Style 4 pack, Exterior Finish Sprayed Aluminum, Handle Type Lever, Shape T-Shaped, Special Feature Easy to Install, Included Components Screw, Key, Lock Type Key Lock, Finish Type Brushed, Metal Type Alloy Steel, Handle Material Alloy Steel, Hand Orientation universal, Unit Count 4.

Price is $640.00

Price: $639.95