In 1989, it was sold for $625,000. The mortgage rate back then was ~9%, which means the monthly payment was $4000/month.
In 2014, it’s asking for ~$1.2M. The mortgage today is ~3.750%. Which means the mortgage is ~$4500/month.
So, over 25 years, the monthly payment difference between someone who bought that house today vs 25 years ago is only 12.5%. That’s much less than the rate of inflation & income growth over the last 25 years. So, it’s much cheaper to buy today than it was 25 years ago.