You'll give a side-quest from his slave, but in his wares is a belt that offer 100% immunity to any damage that is electrical-based.
Once off your ship, walk down the walkway until you meet Eli Grand, the merchant. Submitted by: wolfbrother8 Electrical Immunity
Then, when you happen across a vendor, you can sell any excess goods and use that income to invest in other items of interest to give yourself a real boost. When you run into the limit, you can then deposit your loot in the cargo room containers and talk to your party members again to convince them to make still more goodies for you. You can talk to those party members regularly to get additional supplies, until you are carrying a set number. Check with those party members (and others) to see what all is available.
