2 stores on one site?

The gang I'm associated with are fine craft artists selling retail or wholesale, but sometimes both. What's the easiest way to have 2 stores on one site? The wholesale side needs to be "blocked" from the rest of the world so that prices can't be seen. Could it be as simple as copying the entire store directory, renaming it, and then pass-word protecting one of them for wholesale? Or is there a way to set up a "sub-store" without doing all of that? (My suggestion that they just choose one or the other is falling on deaf ears.)

Sub-categories of products I have looked at, but can't get around the "secrecy" price issue. And many of them have whole different products that they sell wholesale vs. retail.

Any ideas?

I think there is a module for having wholesale and retail stores on the same website.

There is also a module for having multiple sites on the same domain called Multisite.

All right! "hidden wholesale" module. Off I go, and thanks so much!