Looking for a used car.

Ok I know this is the exterior forum but I figured ya'll mit could answer my question.

I'm looking to buy a used car but need some information on these cars.

92-95 Civic Hatchback
90-93 Integra
90-94 Acura Legend
92-95 Acura Vigor.

1.) I need to know for all 4 cars about what a good used one would cost me? (between what and what) (i.e. 2000 and 5000)

2.) I need to know the specific gas mileage so that I can compare the cars.

Thanks
Cheddar Bob

look it up online man