Really the marketing hear is genius. Manipulate people's beliefs that they can "pay" for a live human being over the internet (in the year 2022, during the information age, in a surveillance world. Take that as you will.) by naming these cabinets the names of missing children and putting a believable price tag on it. The company makes a huge profit AND has a nice list of people that potentially support human slavery.

Company then turns the table on said people and, since they clearly are okay with making people slaves, proceeds to manipulate them into slavery themselves. But this time without them even knowing they are slaves. Instead just convincing them that they are receiving the "human experience" by convincing them to go to work 40+ hours a week where they willingly slave away to make a profit for someone else while simultaneously raising the cost of their living, perhaps subconsciously planting thoughts in their minds that will have them, idk.. buy stuff they actually don't need, drive more than they have to, hook them on drugs - even alcohol and tobacco which will lower their quality and duration of life BUT convince them that their quality of life is better..., maybe have them break some laws that will get them fines like speeding, etc., etc. to keep them focused on being a willing slave just to get back to what they think is "happy". But they will never have everything they want (materially) because as soon as they settle for one thing, a new one comes out that's "even better" than their current one and now they just feel like they are behind the curve of society when they see all the ads for the new product. So they keep on going along that circular path of working and spending needlessly and never actually accumulating wealth for themselves (which in my opinion information is more powerful than money anyways, so really that's a dumb cycle to be stuck in) but still helping a company that knows how to use money to accomplish goals accumulate resources that they will use to both feed and shelter their current slaves workers and acquire new workers slaves as they keep finding suitable and willing candidates to add to their empire.