It's a little more complicated than that. It could be that the place is offering training as a carrot and overpricing it as a means of suppressing pay to their

It's a little more complicated than that. It could be that the place is offering training as a carrot and overpricing it as a means of suppressing pay to their employees. So you get a junior developer for half the cost for whatever the length of the payback period is OR you get the cost of a couple of junior developers paid to you by that person. Not to mention, you could only learn that they're severely underpaying you once you get into the industry. And when you absolutely need a job, you'll get desperate enough to take some bad deals. Because the alternative is destitution.