Whether you're starting a business or maintaining the one you currently have, you will need to keep all of your paperwork organized (see our fabulous article on paper trails ) and for keeping all of that pesky paper in line, you will need a file cabinet.
You never need to buy a new file cabinet.

That might not be true. It's possible that you would need to buy a new file cabinet if you have a very specific, very out of the ordinary, very oddly shaped need. But files will stay in order just as well in a used file cabinet as they will in a new one.
There are tons of places to get a good used file cabinets.

Craigslist
portland.craigslist.org

Office Mart
www.officemartliquidators.com

Salvation Army / Goodwill

Portland Office Furniture
www.portlandofficefurniture.com

And occasionally Portland Store Fixtures
www.portlandstorefixtures.com