Hi Bob
It's been my experience that unless you've got something to hide... It's a good idea
not to hide your domain info, especially if your running a sales site.
Hidden information gives the impression that you may not be on the level with your business practices. I and many other online spenders that I know, often look at this information before making an online buying decision. Personally, if I can't easily access your domain info, I won't be spending any money at your site.
You can't be public and private at the same time and realistically expect people to trust you.
Paul