How much does this cost to the nearest dollar?

Traxxas 6488X 14-T Pinion Gear, 1.0 Metric Pitch, Fits 5Mm Shaft (Compatible with Steel Spur Gears) Vehicle
Traxxas 6488X 14-t Pinion gear, 1.0 metric pitch, fits 5mm shaft (compatible with steel spur gears) use Traxxas stock and hop-up replacement parts to get the most out of your Traxxas RTR vehicles. This product is made from high quality materials and designed for long-lasting performance. This is replacement hardware for use on Traxxas vehicles; consult your user's manual for exact parts listings. Includes Grub Screw Dimensions 3.1 x 3.6 x 0.9 inches, Weight 

Price is $4.00
Price: $4