2 months. Now that their eyes are starting to work together, most babies can track a moving object. Your newborn's brain is beginning to perceive and follow motion, so he'll love watching a mobile or playing in front of a child-safe mirror.
1 On average, a dirt bike can range anywhere from $300 to as high as $3,000 for a high-powered bike. 2  For example, PowerSportsMax.com sell dirt bikes that have different engines ranging from 70 cc to 250 cc.3  The price for the dirt bikes sold with this store can range anywhere from $380 to $1,400. For example, PowerSportsMax.com sell dirt bikes that have different engines ranging from 70 cc to 250 cc. 2  The price for the dirt bikes sold with this store can range anywhere from $380 to $1,400.
1 Mid-range bikes cost $300 to $1,000. 2  These aluminum or lighter metal bikes are the best bet for everyday riders because their higher-quality wheels, chains and pedals increase their durability. 3  These bikes often also offer numerous speed settings, water bottle holders and other features. Trek offers a wide variety of bikes for commuting and touring at an average of $1,000, though some bikes from the geometrically sound Pilot series models cost more than $3,000. 2  Trek also sells tandem bikes, or those for two riders, from $660 to $3,630.