He’s a problem for your claimed ‘research’, objections to ‘averages’ and surveys of 1000 people.
The Central Limit Theorem.
You cast your net around regional towns catch a few outliers on the price index, as you have done, but in order to demonstrate the prices are indicative of real experience in those areas you need more samples.
The more samples you get the closer to the mean your results will become, and therefore closer to the actual experience of most people in the market.
The other problem is despite claiming to have undertaken ‘research’ you have done nothing of the sort.
You have started with a premise and then set about seeking confirmation of your premise, in doing so demonstrating a classic example of that other issue you mention ‘bias’, or more specifically, active confirmation bias.