i say it's worth it. i haven't been able to find one at that price in my area. i'd gladly pay 15ish if it has under say.... 55-60k miles on it.
it's such an awesome car, my friend/co-worker had just bought a 2001 Prelude Type SH black.... my god it was beautiful and awesome to drive, but it was completly totaled within 3 weeks in the houston flood of 2001. COMPLETLY submerged for 4 days. it was aweful. you can only imagine how he took it, having to go back to his 1992 dodge caravan after driving that beauty.
but 1.5 months later now, he's driving a 2002 Acura RSX type s, the bastard

i hate driving with him, because my Civic SI feels so slow afterwards D: