Ok, well I'm only lvl 25 and my bf is 35 so I'm not entirely sure.
But have you been to all the instances around your level or lower than your level out of the instances me and my bf have been to, VC, WC, SM Lib and Arm, SFK, BFD, ST and Gnomer. I would say that SM Lib had quite good drops, last time we went the second boss dropped two green items and one blue item. You could probably handle SM Lib by yourself or with one other person, especially if you agro a whole lot at once.
Have you tried SM, RFD, Ulda or ZF? They are the instances around your level and I'm not sure about the drops but you should be able to make a bit of cash.