I love a good deal as much as anyone, but I won't buy shampoo, razor blades or any other health and beauty product from a flea market even if they are practically giving the stuff away. Why? Because I spent enough years working retail to know that a good number of those items are stolen goods; and since there's no way to tell the stolen goods from the non-stolen goods, I simply choose not to buy any of it.
I apply the same rules when shopping on online auction sites. Sure, it would be nice to buy replacement heads for my toothbrush at a deep discount (those suckers are expensive); but I know that they're another commonly stolen item, so for me they're a no-go.
Where do you stand on buying second-hand goods? Are there items that you won't buy for fear that they've been stolen? Tell us where you stand on this issue.
To view a list of commonly stolen items, check out this list compiled by the National Retail Federation: