I work in Africa and one thing that just happened to me is that my company downgraded my airfare TATL from Z class to B class. This created a conundrum for me as I am used to the nice seats up front. But it did give me a chance to use SWU/pay for upgrades. For return airfare to the US my corporate travel department game me two options if I wanted to fly Biz Class: 1. pay $550 for the difference in the B fare basis to the J fare basis :: LOS-ATL-JFK/JFK-CDG-LOS or 2. use my last two SWU to upgrade from B to Z:: LOS-ATL-JFK/ORF-DTW-LHR-AMS-LOS (this is the only route I could fine that had Z availibilty) This got me thinking and I know it is a loaded question with many things to consider so I will write it as clearly as possible. If you were offered the chance to purchase/sell your SWU's, how much would a SWU be worth to you? And as a follow up question:: If Delta made SWU's transferable only through them and for a fee, would you do it? P.S. I ended up taking option 2 due to the fact that I know I will make PM this year and get more SWUs and I have no additional travel planned where I would use a SWU.