I have not tried it, but PriceRide aggregates transportation providers based on price <a href="http:&#x2F;&#x2F;www.nbcnews.com&#x2F;tech&#x2F;mobile&#x2F;uber-ubers-app-compares-ride-hailing-prices-n300221" rel="nofollow">http:&#x2F;&#x2F;www.nbcnews.com&#x2F;tech&#x2F;mobile&#x2F;uber-ubers-app-compares-r...</a>