I just used them to book my upcoming trip at the end of March and am very happy with their service. They found me a fantastic price ($448 including taxes, round trip from NY with a connection in Houston). I bought them over the phone and they were FedExed to me the next day. They will fax you an authorization form which you need to sign and Fax back. If I had purchased my tickets from Continental the same day I bought them from Mars Travel (the same itinerary, same flights) it would have cost over $900. Alexandra from the Houston office is great, she even managed to find the same airfare and itinerary for another girlfriend who had decided just last week to come as well.