Originally Posted by
cny-bikeman
Craigslist or similar (not as good because "flippers" often improperly fix the bike and sometimes hide problems but charge you for a "fixed up" bike).
Its always good to assume that no bike is fixed and go accordingly. If you are on the edge about a bike but think "good thing its fixed" think again as cny-bikeman is right, some flippers hide stuff to sell a bike.