Abandoned slaves as their lifesupport in the cannister will only have a finite life they should turn into "animal meat" or "fertliser"
Otherwise slave trade - its all credits to the me, If you want to be ethical in the game go for it all the more slaves guns and narcotics for the rest of us to trade. Personally to me its a game and I can be as hard nosed as I want
debtors can't sell themselves even if they wanted to. Who would want to anyway?
If I had run up a large debt that would take me years to pay off (and seriously affect my lifestyle due to having to pay it), and I was offered the choice of a year (or more, depending upon size of debt) as a slave instead (after which time your debt is completely cleared), then I'd take the slavery option. Debt is just slavery by another name.
"So you have a great debt? Here have a Sidewinder and a thousand credits. Make some money with it and pay off your debt".
NopeYou can't do cargo scans whilst in super cruise can you?