The price is right...but the service is *wrong*. Yes, they will get you to your hotel for 6.50; but they also have no qualms about letting you buy a ticket, then wait 35 minutes for a shuttle (this was at 10 pm on a Thursday, NOT rush hour on a Friday). After we enquired (nicely), we were then placed on a competitor's shuttle with absolutely no explanation or apology for the delay.
If you have time to waste in Vegas, and you don't like explanations when service fails to meet reasonable expectations, I highly recommend Showtime.