How much does this cost to the nearest dollar?

MilwaukeeTool Switch Tank Backpack Water Supply Kit
The Milwaukee M18 SWITCH TANK 4 Gal. Backpack Water Supply kit delivers the industry's first interchangeable tank design with no manual pumping. Designed to meet user's water supply needs for concrete cutting and coring, the battery-powered water supply delivers instant, constant and adjustable pressure up to 60 psi. The 5-mode pressure adjustment knob adjusts the pressure between 20 psi to 60 psi for ultimate control. The M18 REDLITHIUM XC3.0 Battery provides users with up to 12 tanks of water delivery per charge. The 4 Gal. Water Supply Tank Assembly features a dual diaphragm pump for increased durability and longer pump life. The tank also has a wide mouth opening for easier pouring and a strainer that

Price is $645.00

Price: $645