(MONEY Magazine) – For truer car-rental price comparisons, head to Travelocity.com. Unlike Expedia and Orbitz, the site now quotes a rental price that includes taxes and fees. The service is especially valuable if you're booking a one-way trip. Consider this recent example: With $37 daily rates, Dollar may look best for a Dallas-to-Las Vegas two-day drive, but drop-off charges, fees and taxes bring the total to $587. Avis, with $89-a-day rates but no drop-off charge and lower fees, comes in at $239. Note: You must click on Book Now to see the total price. --Tara Kalwarski