National median home price is $410k[1]. Texas is less than $300k[2]. Only thing that's unrealistic is most people who buy a house for $400k will probably get an FHA loan and put 3% down so will have a higher payment because of (1) mortgage insurance and (2) borrowing more money.
Except maybe Texas, where else can you buy a house/apt in the US near a major job center for only 400k?