Notehall might be able to help you out. This web based system has two main components, buying and selling class notes. Note takers can sell their class notes for a nominal fee of $1.00 per study guide, and $0.25 for lecture notes (payable via PayPal or cheque). Not a bad option if you take great notes. On the other hand, those students who lack in the note taking department can buy notes by purchasing Notehall credits, which can also be earned by referring friends.
How do you know if the notes are any good? Well, it’s buyer beware (Although by taking a look at their list of Advisors, they have the potential to create something quite effective here). There is a rating system in place that can help users bank credits and also weed out the sub par notes, so this could help. While Notehall isn’t an alternative for skipping classes and failing to pay attention during class, this could be an alternative location for catching up on courses for a small fee.