Our daughter is looking at buying this. How do we get realistic estimate of maintenance costs?

you don't guess at what big services might be coming up,because there are probably not any! it's a Toyota!! how much longer will it run? who knows? there is a guy on here that has a 95 4 cyl camry with real close to 400,000 miles on it and still going.find you a good local,trusted,independent repair shop in TX and stick with them to do your repairs.read reviews on it,and i'll bet you won't find a bad one! the toyotas and hondas are designed to go 300,000 plus miles if you keep the maintenance up,oil changes,tune ups,etc.