I actually shop at Lunardi's all the time, but I find that they are more expensive than the local Safeway (which is quite nice) most of the time. Lunardi's does have a much better selection of high-end goods, which is important when I am putting on dinner parties and generally doing a lot of my gourmet cooking (which is only occasionally). For price and quality, it neatly splits the difference between fabulous but expensive grocery stores (like Draeger's) and run-of-the-mill neighborhood supermarkets like Safeway or Albertsons. Since there is two Lunardi's relatively close to me, I use it fairly regularly.
I will say that for meat and fish, Lunardi's is vastly better than the local supermarket.