I haven’t paid my pound of flesh yet, but my instinct is that is doesn’t apply identically to medical school. Cost is certainly one factor, but there may be other reasons to consider a private medical school (which isn’t always more expensive). At the end of the journey, physicians (US MD/DO) have job security and adequate compensation to repay the loans, unlike some undergraduate programs. I put the medical school version below:
LPT: Don't attend an expensive Caribbean medical school if you have to pay for it. DON'T! Aim for US MD. Or attend DO. But DON'T take out a mortgage to be an IMG. It will hold you back for years.