I generally do my shopping in three different sales tax zones here in Southern California:
8.25% here in L.A. where I do the majority of my SW hunting,
7.75% just south of us in Orange County (Disneyland), and
7.25% just north of us up in Ventura County...
Bummer to see I'm getting hit a tad worse than a lot of folks here are (aside from our often unfortunate Canadian comrades). Maybe we need to move...