Actually, I found that stealing off the things that spawn when the power goes out (namely da skellies) give lotsa phat lewt. A bone frag sells for 193gil, and 99 of them (takes 'bout 30 mins) for 19107. Just giving you the heads up .

But yeah, you may want to twink your gambits a tad, and run around killing all the battery mimics first before anything else.