It will be on the refurb site whenever one is returned and Apple inspects it. My guess, it will be awhile. If you have a student discount, just use that. The refurb discount will not be much more.
There's always resale value. Some people are still worried about refurbished products. If you were to ever sell it, you'd probably get more if they knew you bought it new compared to refurbished even though the only difference is the package it's shipped in. Silly, I know, but true.