What's happening RIGHT NOW in Austin is that the sales that are 4-6 months old sold for WAY MORE than 0-3 month old comps, which are the most current, 4-6 months ago when people were purchasing properties as if they were crazy AND drunk, all the Realtors comments were, "well all these recent sales (30-45 days) are really reflective of the market", NOW all the Realtors comments are that the sales from 4-6 months (older) are reflective of the true market, since they were higher.
I have appraised in Austin for 22 years, the values have gone up and down several different times in the past 22 years, Austin also has TONS of different market areas like many large cities, the entire City of Austin hasn't experienced 40% appreciation annually for the past few years, sorry, but when I see properties sell for $605,000 that were listed for $440,000 in a subdivision where the highest sale EVER was $500,000 like I saw last July/August and now that same subdivision is back to $500,000-$515,000 max, to me anyway, those houses that were under contract for $605,000 are NOT the true market.
Just because some market data is current, doesn't always mean it's correct, especially when people are NOT making rational decisions when purchasing a property.