bluelook - 8:43 am on May 27, 2010 (gmt 0)
It depends on the company, and of course on the domain name. I have some parked domains and they include the for sale link, but even with that I'm not really interested in selling some of them, at least not for less than a great offer.
If you ask the price most domain owners will reply with a high price or a "make an offer". Of course there are exceptions, some domainers don't want to loose much time. And others don't sell for less than a great amount because they really don't need to sell domains...
If you want to sticky mail me I can give an opinion based on the owner.