Concur. Av80r is AFU. An E can't just sell back leave any time they want, it's like dtirey stated.
True. An enlisted man or woman can only sell leave days back at discharge or at reenlistment.
I know of at least one person who sold back leave, ME! When I transitioned from enlisted to officer I sold sixty days. You are able to do it (at least in the Marine Corps) because when you have to be discharged from active duty in order to receive a commission. I have the DD 214 to show it. From the financial standpoint it does makes sense to take terminal leave vise selling those leave days back. You cannot do both, so if you get the chance to sell leave days prior to commissioning I recommend doing it.