Evidently slavery is legal in some places still. It seems that slaves go pretty cheap, too....
two Libyan men were sold fairly recently for about $400 each.
Now me, were someone to give me a slave I would look on the gift very much the way the 'white elephant' was looked upon in song and story; a gift meant to bankrupt. There the slave is. Were I to free him/her, what would happen to him/her? Just how well would THAT story end? Nope...first I would have to feed, clothe and house the slave, teach him/her about living in this culture, handle any legal problems that arise with him/her BEING here, make sure that s/he has the knowledge (education, folks) to make a living wage wherever s/he ended up, and then make certain that the paperwork that went along with freeing him/her was in proper order so that nobody could take his/her freedom away again. Please note that there's nothing in there about getting any work out of him/her
If you can buy a slave for $400, I still couldn't afford it....because buying a person in those circumstances means, frankly, adopting him/her to all intents and purposes. It would cost more money than I could ever get to afford a save.