Actually EVERYONE can have a comp that has a +crit to UW trading..you just need to spend the money. You cna buy the droid part that gives your ship droid +2 crit to UW trading. You either need to repair droid in your legacy or go to someones ship that has it and buy the little droid. It is wroth it over time to have
well, to buy things you need to make money first
I've got a level 50-32-30-29 and a few between level 10-20 and still didn't reach the 1 million credits total yet
while I put around 300-350 items per day on the GTN.