How much does this cost to the nearest dollar?

Walkera 25C 3S 11.1V LiPO Battery for RC Helicopter
From the Manufacturer Walkera Original Factory Replacement Part 25C 3S 11.1V LiPO Battery for the Walkera Radio Controlled (RC) Model Helicopter. OEM Replacement Part Uniform Dimensions High Quality Fits Walkeras Dimensions 4 x 1 x 4 inches, Weight 1.85 pounds, model number Manufacturer recommended age 14 - 15 years, Batteries 1 Lithium Ion batteries required. (included), Rank Toys & Games Hobby Remote & App Controlled Vehicle Batteries 4185, Is Discontinued Yes, Manufacturer Venom Group International, Available June 28, 2013, Batteries 1 Lithium Ion batteries required. (included), Brand Walk

Price is $40.00

Price: $39.9