I feel like a traitor

Dilemma: what is worse, being a thief of your own wallet, or denying someone you know some income?
I faced this dilemma when Piet, my favorite merchant on the clothmarket, had linen for 5 euro a meter, and someone a few corridors away had it for 3. Sadly, the one who had the linen for 3 euro a meter didn't have any white, so I just bought firetruck red there, and the white with Piet. Still, it feels a bit strange.

I fear there might be another dress diary in this one...