There's money to be made but not selling the level 50 gear unless its moddable.
That's exactly right. It requires a slight rethinking in strategy, but you can make a lot of credits keeping it at about lvl 40 or below. The crafting mats alone are rediculously priced at times on the GTN.
Something tells me things aren't going to remain like this anyway. I'd be surprised if we didn't see some major changes by/at the expansion.