if you're more just looking for a decent e30 to drive around you'd be better off buying one in good shape. a buddy of mine bought an 85 not to long ago for $1500 running good no porblem and it already hada pretty nice sound system too.
jrhaile over near spokane got a running dinan turbo'd e30 for around $4500 (correct me if I'm off, james). that's something like an 11 sec car too. If you're looking for a drivable car as opposed to a project car I'm positive you can do better.
I'm over near seattle and it took me a year to find the bmw perfect for me. boy am I glad I waited
whatever you do, daggis, good luck!
edit: just talked to james. his mechanic bought the E30 for $2500 and spent $1-2k getting it going. by the time he bought it it was $8000 but that's after several upgrades. you see my point. around $4500 for a running dinan turbo E30, which is one of 200 produced in the US.