How much does this cost to the nearest dollar?

BLACK+DECKER 20V MAX Battery with 3-Pack Spool, 2.0-Ah
The BLACK+DECKER 20V lithium battery with 3 Spools is designed to be compatible with Black & Decker 20 Volt Max lithium ion cordless tools and outdoor equipment. The 2.0 ah cells allow for 33% more run time than the This 20V BLACK+DECKER battery is easy to install remove and is always ready to go due to the lithium's battery ability to hold a charge for an extended amount of time. It also includes (3) AF-100 Auto Feed Spools. These spools fits multiple string trimmer models. BLACK+DECKER 20V Lithium Battery Pack with 2.0 ah cells has 

Price is $57.00

Price: $56.62