Just out of curiosity, did you know the lines were showing before you left the salon?
I'm familiar enough with styling prices around DC and immediate suburbs for example, Tyson's Corner in No. Virginia is one of the highest on the east coast.
However, I believe that not only can you do better for price (around $250-$300), you can find a stylist that keeps you from looking like you had been worked on by a student.
My niece lives in No. Springfield VA and has a firm grasp of what prices are currently. I'll ask her what she pays for same services. She is style conscious knows value, and is seen in a public exposure sort of job.