According to this chart published by the New York Fed, it takes about 10 years to recoup all up front costs of a Bachelor degree including the interest on an average loan. I got pretty much screwed though.
Luckily my son has no debt as of yet. We saved, though the rising costs of college are ridiculous. We hope we have enough with our money and his scholarships for him to obtain his IBA with no debt. He received his AA with none. Fingers crossed. )