Shopholm Syndrome
The resulting snobbish attitude of hourly-earning, high-end retail workers caused by prolonged exposure to rich, snobbish customers.
Shopholm Syndrome manifests when you are ignored because you don't look as wealthy as the stores usual patrons, snubbed when you ask for something you don't see on the shelves, etc. All this is contempt for you, the poorer shopper, who probably makes as much or more than they do in some office job.