How much does this cost to the nearest dollar?

Unger Rinse 'n' Go Spotless Car Washing System with Deionization Filter
The Unger Rinse 'n' Go uses the same technology that professional car washes use for spotless and streak-free results. This revolutionary system takes spot causing minerals and contaminants out of the tap water, in a process called de-ionization. The lightweight and compact design is ready to use right out of the box. You'll get spot-free results with no need to hand dry - just wash, rinse, and go! Also great for RV’s, motorcycles, windows, solar panels, and more. No need to hand dry - just wash, rinse, and go Uses the same technology that professional car washes use for spotless and streak-free results Lightweight, compact, and ready to use right

Price is $550.00
Price: $549.99