We had DD's sillhoute done in Liberty Square last year and we love it. The woman was great, Dd was cranky and uncooperative but the lady just chatted to us and ignored DD while all the while snipping away. The result is wonderful!
I don't remember exactly how much it was, but I am thinking that, two sillhoutes (that is how they are cut, you get two) and an oval frame, it was around $20. I think, I just remember it not being really expensive.
HTH! Have a wonderful time!