It never hurts to ask (unless you have a sore throat)
I had to run into the mall yesterday, to return the aforementioned 103 dollar pair of "insanity pants." That I did, and while I was walking out, I noticed the top I purchased that day, which I decided to keep, was on sale. I walked back to the register and asked the snobby clerk if they do price adjustments, which they did, so she adjusted my price and I got back $12.xx. Not bad, for minimal effort. I'm wearing the top today, I've already gotten some compliments on it.