Where to find wholesale used parts
My school is reinstating our bike co-op, but we are dire need of extra parts. Pedals, cranks, handlebars, basically anything that someone trying to build a bike or fix a beater might want.
Do any of you know of any reputable sites, Ebay sellers, or other people/gruops who sell used (cheap) parts in bulk? Obviously we'd like to find stuff that is not garbage, but it doesn't need to be anything special (plastic pedals, for example, are fine).
There's only so many bikes we can hope to find at the limited number of garage sales around here.