Thanks for all the advice guys, turns out I didn't do my research! I guess I thought anything short and pronouncable could be seen as brandable, obviously got swayed by other people incorrectly describing their loans in a similar fashion.
I also listed them on sedo, saw the suggested prices and thought I would be quids in. A rookie error, I expect!
I'm now looking into purchasing some more keyword based domain names rather than just assuming 5 letters = instant win.