Mark's word of caution has merit and I learned that lesson the hard way.
As most of the old timers here remember, I threw away a corroded 152 (Queenie) because I didn't know what I was doing and had a less than honest A&P/IA doing the inspection.......okay, he was a crook.
Lessons learned the hard way and the corrosion Queen will never fly again.....bad, bad deal but I was lucky enough that I could take the hit and keep on flying.
Be careful out there when buying any plane......do your home work, too.