Maybe you guys already knew this, and I am just the last one to know this sort of stuffs. My wife and I bought the ticket 10 days ago (IAH-FLL) at 380 each (pretty expensive for such a flight but we "have to" go there for some family reunion event. Yesterday, I decided to just check again and see if the fare is still that high, it turned out that for the same fare class (Q), same flight and time, the fare dropped to $307, which is more reasonable for this routing. So, I called CO, without any expectation to get anything back, but wanted to ask why the heck this is happening. They said since this is within 30 days from the purchase date, I am eligible to get the $73 back but need to be deducted $50. So, they refunded me in a form of TCV for $23 each.

I guess this policy has been in place for a while? Is there somewhere I can read how this policy is spelled out?