my dad has an '86 944 turbo.
around here in goog mechanical condition and ok exterior(no crashes) they go for anywhere between $7000 to $11000 mostly depends on milage.
my dad bought his a while ago for $6000, put in all new gaskets, water pump, now a clutch, koni yellows
and basically a whole new a/c unit for $1500.
pros- pretty fast stock, LSD, can run on 87octane if needed.
chippable, can be tuned by TunerPro, or atlantis dme editor to gain alot more power. my dad hasn't let me chip his yet.
cons- parts are somewhat expensive. at least compared to civic shit
clutch alone was $700 for oem, although about the same for South Bend clutch unit. little parts are hard to find being older too