You might find this site interesting in defining "rich":
<a href="http://www.lcurve.org/">
http://www.lcurve.org/</a>
"Some doctors and lawyers and professional people, with incomes of a few hundred thousand dollars may feel "rich". They may have nicer homes and cars, and they may have attitudes that separate them from the masses. But they still must work for a living and are primarily consumers of their earnings. Whether they recognize it or not, they actually have more in common with the people at the bottom than they do with the people in the top 1/2%."