I asked him what the difference was between the various grades, and he told
me the "medical grade" was $1.20/ft, the "aircraft grade" was $1.10/ft, and
the "industrial grade" was $1.00/ft. I asked him what the actual difference
was. He told me to lean across the counter and he showed me the spool. It
had three different part numbers on it. The clerk told me that it was all
"medical grade"; they just charged different prices based on what grade you
asked for!

I absolutly believe that!