Prior reviews are right - if you want to take a cab ride home from Phx Sky Harbor you will end up in a yellow cab and it will be a shady experience.  There were yellow cabs lined up as far as the eye could see, it was 3am London time and I just wanted to get back to my car which I parked at my place of employment, corner of University and Mill - that's 5.16 miles for those who care.  Driver never started the meter (I expected the $15 flat rate, see prior comments) and when we arrived he wanted cash only and wouldn't tell me what I owed, instead saying most people pay $16 or $18.  I opted for $18 since this is exactly what I had paid going the other direction trip + tip.  \""Why not $20?\"" he says.  For the love of God, let me out of the cab!!!!!  I seriously don't want to dicker over the cost of the fare.  I'm still waiting for the $20 charge (yes I acquiesced in the name of ending the dickering) to clear my bank and am honestly petrified that some crazy alternate charge will show up instead.  What a racket!  Addendum:  The Arizona Department of Weights and Measures regulates taxis and questionable practices including overcharging can be reported to them:  http://www.azdwm.gov/?q=resource/regulating-taxis-shuttles-and-limos