In our FF rules, elite members get a certain # of upgrades. First, the fare from "L" became non-upgradeable. Then came the U-class fare. Originally Delta defended the move and stated that the domestic upgradeable fare, such as "K" class, could almost always be found for about $40(give/take $20) more/each way. With so many U-class fare internet offers, the K-class fare is much more than $40/each way.