I'd go with the Salvation army idea. Or drive around on trash night and see what you can pick up. Just make sure to take a good look at it and a good whiff of it before you get it into your dorm room
Anything you could pick up for 300 is probably only as good as what you could get at sal army, considering the fact that it WILL get trashed, whether you intend for it to or not.
Additionally, if you only pay 30-50 dollars for it, at the end of the year you can just toss it and not have to worry about finding someone to take it or drag it home.
With your 300-400 dollar budget, you could buy a couch for every year you live in the dorms, easily.
I often wondered if it would be worth while you rent some storage space near a campus, and at the end of the year pick up all the couches and furniture people throw away, and then at the start of the next year sell them. I'm sure it would cover the cost of the storage unit, and make some on the side. Oh well. I'll let someone else find out if it'd work
