There is, or at least was, a website which had a reamer borrowing program.
It involved 'making available for lending" a reamer, after which you were able to borrow those that were available.
Not sure where that website is right now as I'm on a business system and not close to my own.
Also
Elk Ridge Reamers: http://www.reamerrentals.com/
and http://www.4-dproducts.com/
Not sure of their inventory but a place to browse anyway.
FWIW