I tried to book airline ticket on cheapoair.com and the price they showed me was very cheap, so I tried to book it, but everytime I try, it states that this ticket is no longer available, so I go back and pick another flight number and time and same thing. I did this 5 times and yet none of them were available. I didn't continue because the next price for the ticket was twice more than what I was looking at.
I had the same problem at travelation.com. This is a bait and switch that these travel sites use to get customers to purchase high priced tickets - I have read many posts on the internet about these companies using this type of fraud.

DON'T USE CHARPOAIR or TRAVELATION.com!!!