Affiliate Marketing Secrets

I was wondering if any stores sell sheets of Colored Butcher Paper – NOT the rolls. For my college’s chemistry club, we are trying to get some, but they seem to only sell by the roll (which is around $50-$150). We don’t need that much, just a sheet of it.
My college has those papers, but because we weren’t affiliated with that particular program in our school – they wouldn’t let us get 9ft of butcher paper (even if we paid). And to get affiliated, we need to go to a workshop that is offered a few weeks later (which is past our planned function).
Help please?