AJ's is like the Neiman Marcus of grocery stores. You can find some hard to find, high end items and the whole feel of the store is upscale from the perfect rows of produce to the check out clerks who wear ties to scan and bag your items. This location has a nice selection of ready to eat fresh packages foods, a pizza bar, salad bar, sushi station complete with sushi chef, just to name a few of the prepared foods available.
The prices are at a premium, even for the same type and brand of everyday item you would find for 40% less at a typical grocery store like Fry's. The produce is priced similarly at a premium but I can understand the higher price is justified because each and every fruit or vegetable looks to be guaranteed fresh and good quality, eliminating the need to go rummaging around a produce bin for the best produce.
Some of the more exclusive items I found here were Kona coffee, jars of chopped truffles, and a bottle of aged Balsamic vinegar for $200 enclosed in a special glass case.
In general, I'd probably go here if I wanted to try something from their prepared foods area or if I were looking for a rare high end item but unless I win the lottery I wouldn't shop here for my everyday groceries.