If you are a regular there then you are helping support that store in sales and word of mouth to others. I would try talking to the owner. Explain what happened and how his son's reaction was wrong. If there was to be an extra charge then he should have stated that in the beginning! If there was an extra charge he could of said that he was sorry that he didn't tell you there was and left it at that. If they don't want you to buy "cheap" fabric then they shouldn't sell it!! every sale counts no matter how small :x And 6 dollars is six dollars. It could have happened to you before without you evenrealizing it and you don't want it to become a regular thing either. You are right!! he was wrong!