Am I Cheap?

Is thriftiness really a bad thing? Sometimes you can be pennywise and dollar stupid. Take for instance my computer. I ordered a $1300 computer and then had it sent to my girlfriend's office in the suburbs in order to avoid paying as much sales tax. Specifically the saving ended up being $13 after you consider that I had to pay three dollars to take the train to pick it up. Was all that effort worth the 1% savings? Since it took about an hour round trip you could consider that I worked that hour and made $13. A penny saved is a penny earned...right?