If you're in the hauling business, one of the faster "research" methods is using the set destination - add waypoint method of determining which goods are the most profitable to haul.
When you find a really cheap seller in a commodity, set it as your destination. Then, go through all the high buyers, "set waypoint[ing]" all those until you find a haul that has the fewest number of jumps from the cheap seller to the high buyer.
If you need a quick infusion of cash, hauling is always nice since missions can take a while to develop (get up to lvl 3 for bling bling rewards)