How much does this cost to the nearest dollar?

Rockford Fosgate Power 400 Watt Class-ad Amplifier
Our ultra-compact (1.6” x 4.3” x 8.3”) Power amplifier produces more power per square inch than any other model we make with 400 Watts of POWER Proprietary Constant Power amps are the most powerful on the market, delivering up to 25% more power across all impedance loads (100 Watts x 4 @ 4-Ohm or 100 Watts x 4 @ 2-Ohm or 200 Watts x 2 @ 4-Ohm Bridged) Proprietary Class-AD technology, featuring Constant Power to produce the same output at both 4-Ohm and 2-Ohm, making it perfect for hybrid, electric,

Price is $520.00

Price: $519.99