Black Sunday?

Because today is 10-10-10 our local grocerys tore is having a 10/$10 sale.  This sale included the 6 packs of 7up brand 16oz bottles.  This sale has made the normally decent people of my town into bargain hungry monsters.  The poor employees could barely keep the display stocked.  I haven't seen this level of shark circling and pushiness since the one year I ricked my life to attend Black Friday sales.  It was ridiculous.  What is it about saving a little cash that makes us forget the simplest of manners and decency?