To make your domain price higher, you need the to have low alexa rank, high google pr rank, multiple backlinks, visitors, keywords that rank to achieve you need to develop a website and do seo and marketing to it, but this is a long, tedious and expensive process. I used to do it before.
Ahh, that's something I can't do. Though, I have other really good names myself.
What about auction place? Can I expect big?