Just looked at St George on zillow. Seems basically the same price as Rancho San Diego and similar newish “near-exurban” parts of San Diego County. Maybe St George is 10-20% less.
My commute from here to my old house in OB is 22 minutes. Same for my office in Bay Park.
I think RSD will appreciate more because St G seems to be priced well above construction costs, and there seems to be a lot of developable land around it on almost all sides.