97 528?

im lookin real hard at a 97 528, hopefully grey on grey... i have an 88 now, and its starting to come unglued. i love bmw's cuz im tall, and nothing save a giant truck has enough leg room for me. my 5 has got it no sweat. well either way, i want that car, and was wondering what kind of mileage/price i should look for. whats their record as far as maintanence with mileage? i dont want to get a car and have it crap out in a year... preciate any help