Flying with them this week from BWI to TYS rt on their relatively new twice a week non-stop (the only one), but bought the ticket only three days in advance, so the savings approached $1000 over legacy carriers that have only connecting flights. Pricing was actually not too different from Megabus each way from Union Station in D.C. However no matter what I did, their computer had the same middle seat in mind for me on the flight down here to Tennessee. I tried to check in at T-24, and then again as the day wore on, on different browsers, after clearing cookies, and on different computers, but I always got the same middle seat. For a one hour and a half flight, it didn't seem worth spending the minimum $9 to get an aisle seat. Plane ended up being full, so the airline seems to understand their market.