yep.
none of the metrics used captures a 'snobby' attitude.
in order to do that you'd have to interview people and ask them questions related to how much better they think they are compared to everyone else. for example if they think living in a more expensive house in a more expensive city or driving a more expensive car somehow makes them a better person. basically, finding people that tie their self worth to how much they spend/consume (which is immature imo but a surprisingly large number of people do this).
Questions of a material nature will rarely identify a snob, particularly because they will not equate having nice things making them "better" or even better off... In a snobs eyes, they ARE better people and that's why they have better things
To identify Snobs you have to sneak in questions like their views on gentrification, political slants, foreign policy, immigration, welfare, etc etc...

Um.. no. There is a direct economic phenomenon called 'The Snob Effect' that's based on the price of something.
