Thinking of buying the car. It shimmies from 68-75mph.Why?

Not sure if the word is shimmy. It vibrates from 65-78 mph. Not a whole lot, but you feel it, and it is steady. Otherwise seems OK. Is alignment expensive? Thinking of buying this used ccar from a friend. Otherwise it is in very good condition.

An alignment will correct a pull in steering to one side or the other, not a shimmy. Have the tires checked for wear, if in good condition, have the tires balanced.

I tookk it to a locl tire mechanic. He said what you said.. nothing major. At most tie-rod, but probbly just blance and allignment.