While I applaud your initiative, I cannot believe that teachers would feel comfortable using something made by a single person who just graduated/will graduate? high school this year. You can keep your name, but I'd recommend taking out your relative youth. Also, I'm always a big fan of competitive analysis charts, especially if you're competing on price. Here's ours: http://www.dawdle.com/selling/index.php/fees/ I w…
I'll give some more thought to revealing my age on the about page (I'm now a college freshman, by the way). Any specific reasons you say teachers would be uncomfortable with it? I'm hesitant to add more plans at the risk of creating too many options for users, but I am looking into the possibility of institutional accounts. Also, I hadn't fully realized the disconnect between that screenshot and subtitle, thanks.
Read 'The Truth about Relativity' in Predictably Irrational by Dan Ariely. He explains this problem really well.
A quote from that chapter: most people don't know what they want unless they see it in context. We don't know what kind of racing bike we want—until we see a champ in the Tour de France ratcheting the gears on a particular model. We don't know what kind of speaker system we like—until we hear a set of speakers that sounds better than the previous one.