your stuck. You sound like me. We should just book and NEVER look back...but we always do. Airtran usually drops prices Tues-Thursday if they drop them. I have noticed this past month the prices are creaping up.
You can't get a refund but you CAN get a credit to use on Airtran flights if you call them. I can't remember if it expires or when. Make sure they credit back the $15 fee for a phone transaction.