How much does this cost to the nearest dollar?

GPM Upgrades Aluminum Front Gear Box for Rustler 4X4 VXL & Slash 4X4 & Slash 4X4 LCG & XO-01 Rc Cars (Green)
(1). Made with a quality light weight high tensile strength aluminum 6061 T6 for more stable performance with great durability. ▲Original part. ▲Part location：Front gear box area. ▲Product major functions & usage：Stablize the front differential parts and gears to achieve smooth rotation. ▲Major advantages of upgrading to this Made with a quality light weight high tensile strength aluminum 6061 T6 for more stable performance with great durability.(2). Design with heat sink on the surface for faster cool down. ▲Package includes：Gearbox - 2Pcs ; Stainless

Price is $
Price: $51.41