Aside from Roland Juno-G I can't think of any other entry level all-in-one sort of workstations. You might have to ssave up or wait until they get cheaper. Unless there are some beginner-oriented workstations I don't know of.

Check out your local music stores. I'm sure you'll find some entry level workstation you'll like. Cool thing about gear is it just keeps getting cheaper and cheaper as soon as the new model/version of the same thing comes out.

cheers,