Somebody asked me what a "Preppy" pen is. You can see them here:
For less than $4 these are very good. The ink isn't always my favorite color, but you can refill the cartridges. The purple medium point is great. Trust me on that one. It is more of a magenta than purple and people don't seem to forget if you write them a letter or note using it. If you're curious on what ink would match it, please drop me a note.