UberX is significantly (40%-50%?) more than a NYC yellow cab. Its basically $6 base for uberX (versus $2.50 for yellow cab), $.75/minute for in-traffic in uberX (versus $.50 for yellow cab). Also uber's threshold speed for traffic is much higher than NYC's (below 11mph = traffic for uber, vs below 6mph = traffic for yellow cab), which means that more often than not you are in this (more expensive) price tier. Its hard to average over 11mph if you are going cross town in Manhattan.