To play Devil's Advocate for a moment, and I apologize in advance since I don't know the whole situation. Leslie, if you don't mind what is your current cost per year for four stations. To me, there is not much difference in a per computer license vs a per user license. I actually prefer a per computer licesne as it avoids the possibility of the program mistaking users using multiple computers on a domain.
The only thing that is weird is that it is an annual charge. Every PM I have used, I pay for the licenses and that is that much like paying for Windows. Are you sure these aren't dynamic licenses which would mean you wouldn't really need an extra license.
@Brian...While the $895 sounds rather exorbitant I agree, one can't really look at it as though it doesn't cost the company anymore to let her put it on another computer. One could say the same thing about all software: Adobe, XP Pro, etc. You have the disk, why not put it on all of your computers? It doesn't cost them anymore. But, it really does.
This is just to get more information and stimulate conversation -- not to necessarily disagree.