How much does this cost to the nearest dollar?

Mr. Heater BTU Forced Air Propane Heater with QBT, Regular, Multicolored
The Mr. Heater Portable propane heater variable BTUs of heat output offers efficient temporary heat for construction sites, agricultural buildings, industrial workspaces, remodeling jobs and more. Features a high-output fan to maximize air circulation, 10-ft. hose and regulator. High-temperature limit switch/flame safety. Compact and lightweight with attached carrying handle. Includes a built-in thermostat. Uses tank (not included). CSA certified. 250000 - 400000 BTU per hour For use with propane gas. Heats up to 10,000 square feet Operates up to 17 hours on 2-100 lb. propane

Price is $639.00

Price: $639