The original post said the average cost for a studio was $900. You claim that the 20th percentile cost is $1000.
That doesn't make any sense whatsoever, so you go figure out what the real numbers are and then we can talk.
What methodology would you use to find this data if Appartments.com isn't reliable?
But most apartments don't get rented through apartments.com, and the ones that don't are skewed towards the lower end of the market.
The 4-flat where the owner is renting out the other 3 places and living in one of them doesn't show up on apartments.com. I don't know where you find good comprehensive data, you tell me. But if you are looking at bad data because you can't find good data, you are the drunk looking for his keys underneath the street light not because he lost his keys there but because the light is good.