$30 or so.
I just got the Macroloader. You can check it out on eBags. It is truly large, and has a nifty side pocket for your laptop.
Also slightly pricy (80 bucks), but it seems worth it.
It's the curve and the way they write/enforce it.
I only learne about this after we took the K midterm, about a month or so before finals, when someone asked the prof how the curve works. Grades for any given one L class of D or F are awarded to no fewer than 10% and no more than 20% of the class. Meaning in a class of 80 students, anywhere from 8-16 students get D's or F's. Academic dismissal is set at 1.75, meaning that if you get more than one D, you are basically screwed.
IIRC, the ABA rule is 20hrs/week. Some schools might implement their own. I didn't work first semester and I was bored, but I did very well. I worked 13hrs or so a week 2nd semester and I slipped a little. I'm not sure if it's attributable to work, getting cocky, etc. That said, I'd be hesitant to take on a commitement before you even start school.
Out of curiosity, did you work for a firm? If you did, what kind of work do they have 1L's do?