Well, you didn't mention whether you were looking for an S13 or S14. If you go S13 and want reliability, I'd hold out for a dual cam model (91-93). The car is plenty fast for daily driving. That's why I bought mine. I'd try to keep the mileage in the low 100k's or better. At 10+ years old, the bushings have mostly taken a dump. The car is also pretty sensitive to out of balance/round wheels, and bad alignment. Used parts are cheap. Fuel economy isn't that great. My WRX gets the same milage. ~21mpg in mixed cycle, 24+ on the highway. Price? Anything under 2000 for a clean S13 is good. 95 S14's seem to get down into the $4000 range with relatively high mileage. It varies wildly based on condition and whether or not the seller is a Nissan person.

...and you have to put up with sarcastic wankers that won't answer posts seriously!! hahaha