"It defines this group as having household income of between $100,000 and $350,000 for a three-person family." I can never take this type of article seriously.

"It defines this group as having household income of between $100,000 and $350,000 for a three-person family." I can never take this type of article seriously. $100,000 represent a different buying power in NYC, in Dencer or in Cleveland. Or can you use a salary range like that completely independent of location?