Would you argue this on principle?
Okay, I frequently go to the same place for Chinese food. Normally I spend around $23 or so. I had a coupon for $4 off any purchases of $25 or more. My total (before taxes) came out to be around $25.14 (estimating). After taxes, it was $26.65 at 6% tax. Now, using my coupon only brought it down the $4, and not the extra 24 cents for tax.
When I brought up the fact that it should be $4 off before tax, they put up a stink and tried to justify it that most peoples totals aren't above $25 before tax, and that it puts it over the needed amount. To me, especially dealing with mostly cash, it kind of seems fishy. Had I had more time and not have been so hungry, I may have pressed the matter but in this case I just took my food and left after paying. Yes, it is only 24 cents but it didn't quite sit well with me.
What are your thoughts?