How much does this cost to the nearest dollar?

PullRite Pulliam Enterprises 4428 SuperGlide SuperRail Mounting Kit - Chevy 2500 & 3500
The 4100 & 4400 SuperGlide hitches have the option of using either Universal Mounting Kits with fixed base rails or SuperRail Kits, with custom designed mounting brackets and totally removable SuperRails and Mounting Posts. Includes totally removable SuperRails & Posts, Mounting Brackets & Hardware. Fits both 4100 and 4400. For Models Chevrolet 2500 & 3500 The 4100 & 4400 Super Glide hitches have the option of using either Universal Mounting Kits with fixed base rails or Super Rail Kits Custom designed mounting brackets and totally removable Super Rails and Mounting Post Includes totally removable Super Rails & Posts,

Price is $504.00

Price: $503.61