I've been getting good flanken ribs from both Safeway and QFC or any good shop should be able to fix you up.
Ask the butcher if he has any short rib sections with a nice, wide meat band like the ones in the pic.
I almost never see "the good stuff" already cut and wrapped in the case.
I like them cut 1/4" thick (or less) with at least an 1-3/4" wide meat band not including the bones.
1-1/4 to 1-1/2 pounds per guest is a good estimate.

Walton's Market <cough> Walmart actually has a pretty good spice selection.
Picked up my chives there the other day under "Lighthouse" brand and lo and behold they are a product of Germany.
Nice sized glass bottle for a good price.

The Kadoya sesame oil was from an Asian market.
My latest is Kyoto brand and it's good as well.
US produced under Japanese license it appears, glass bottle.

Have a good cook !