1998 - s-works - what's it worth?

a mate has a 1998 s-works sitting around. It was kitted out in the day, lx or xt groupset, magura hydraulic brakes, hope hubs built up on bomb proof rims. It has manitou forks on it.

He bought it second hand in good nick, used it once and it's been sitting up since. One or two mechanical issues of uncertain origin.

I figure to get it back on the road would require - full service, hubs would probably need attention? I think the forks (although very good ones at the time) may have been elastomer - those have probably degraded to the point of replacement -can they be replaced, or are they consigned to history?
brakes would need to be bled and sorted.
You're prob looking at a bill of €100/150 for what I've listed. The bike is only of limited value to me - for my gf who will prob use it just as much as my mate has ever done!

What's a fair price? I had been thinking 200 / 250 as it's not worth much more to me, and by the time you've spent the repairs you've 400 down. C2W would buy a pretty neat machine for that net spend.

So is it worth doing? and what's a fair price?