How much does this cost to the nearest dollar?

Nikon Rechargeable Lithium-ion Battery Pack for D4S & D5
The EN-EL 18a is a 2500 mAh Rechargeable Li-ion Battery that is used to power the D5, D4s and D4 Nikon D-SLR cameras. The Li-ion Battery can be charged using either the MH-26a or MH-26 Battery Chargers. The BL-6 Battery Chamber Cover must be used with the battery. Dimensions 0.39 x 0.39 x 0.39 inches, Weight 0.035 ounces, model number Batteries 1 Lithium Ion batteries required. (included), Rank Camera Batteries 5800, Is Discontinued No, Available March 1, 2014, Manufacturer Nikon

Price is $89.00

Price: $89