A simple "thank you" will suffice

I'm just beside myself with how odd people are sometimes. Today I was in the elevator at school with a girl who had on adorable sandals. I commented on how cute they were and she said, "oh they're cheap and falling apart." I was in shock. Since when does a simple "thank you" not do the trick when someone compliments you?! If someone tells you they like something please do not scream out, "it was on sale!" or "it was a great find at the thrift store" or anything else. Just say thank you and smile smugly to yourself. You know that you got a good deal. Why share? You honestly look crazy when you spill the beans.