File this one under “Why didn’t I think of that?”: A student attending Auburn University to get his PhD figured out a way to cut way down on his tuition expenses by amassing thousands of dollars in rebate checks and prepaid debit cards. After punching in the numbers on anywhere from 200 to 250 debit cards he received as rebate payments along with $1,000 in rebate checks, he’ll only have to pay $450 out of pocket for this semester’s $4,500 tuition. [More]