How much is a motor mount for a 1989 accord?

Hi there, I was looking at a 1989 Honda Accord on craigslist ( here's the link: http://oregoncoast.craigslist.org/cto/1856070398.html ) and I wanna know, how much does it cost to fix the motor mount? Like take it to Les Schawbs and have them fix it? I want a car and its cheap but if its over $250 forget it.. Please lemme know I'm looking for my first car!!