Puzzle Quest: Galactrix Discussion
When to sell, well, whenever you want. If you are going to mine, make sure you have space. On the other hand, if you are going to craft stuff, you need certain resources on hand. (Determined by which 'recipe' you're making.)
I haven't yet found something that needs contraband, but if you have that onboard you'll get jumped by everyone. Either dump it, or make a quick run to a station to sell it. To avoid the hassle, I sell it at the first station, even if it's a bad (red) price.
Hope that helps.
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