I've lived in Kansas City, DC, Chicago, New York, San Francisco and Austin.
Is Austin cheaper than San Francisco? Yes.
Would I classify Austin as "affordable"?
I would have two years ago, when my wife and I were first looking to move here. That was the whole reason we began the process.
But, it's gotten insane.
We were going to wait a year, after renting, before we bought. Prices here were rising, we bought within six months so we wouldn't get priced out of our neighborhood.
On my street, I have neighbors who bought literally a year before me, who live in basically the same home (1970s subdivision so all the houses are basically templates) that paid 40% less than we did.
My neighbors could not afford to buy their current homes at the prices they're currently selling for. They cannot afford to buy similar homes in similar neighborhoods.
This is only going to get worse.