Why Smugglers need slicing to be profitable:
Luke: So. You got your reward and you're just leaving, then?
Han Solo: That's right, yeah. Got some old debts I gotta pay off with this stuff. Even if I didn't, you don't think I'd be fool enough to stick around here, do you? Why don't you come with us? You're pretty good in a fight. We could use you.
Luke: Come on. Why don't you take a look around. You know what's about to happen, what they're up against. They could use a good pilot like you, you're turning your back on them.
Han Solo: What good is a reward if you ain't around to use it? Besides, attacking that battle station is not my idea of courage. It's more like, suicide. *
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Princess Leia: It's not over yet.
Han Solo: It is for *me*, sister. Look, I ain't in this for your revolution, and I'm not in it for you, Princess. I expect to be well paid. *I'm* in it for the money.
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Luke: Well, more wealth than you can imagine!*
Han Solo: I don't know, I can imagine quite a bit.*