There is a great wig shop on 82nd. Its called Pony Express. Her prices are EXCELLENT and she may be getting a booth at the con to sell her more colorful wigs. I got a pink wig for my Puni Puni costume from her. Unfortualtely, she has a family function the same weekend, but hopefully I'll convince her to get some help. Her shop is not near the hotel, I'm afraid.
If this sound like an interesting prospect, let me know, so I can pass that on to her. Also, let me know what style of wig you'd like so I can tell her to pre-order.
Just so you know, I don't get anything out of this, I just really appreciate a good price. And a good wig really makes a costume.