I have been having pretty good luck so far using Craigslist. You can go there and examine the tool and test it etc...
The only problem is, if I get a cordless tool, how would you examine the battery?
As we all know, sometimes a new replacement battery can cost more than 50% of the tool brand new. It makes no sense to get a cordless drill for example, if the drill goes for $150 new with battery and I can get it used for $50 but the battery is shot and a new battery is $80.
So my question is, is there anyway to test or inspect a battery? If someone charges up a battery and it works good for only 5 minutes, I won't know until I bought it home...