Any shop that sends out a catalog will probably have a link to their catalog online, which usually features complete ensembles. You could take a look through that. Which store you choose depends on your style, age, etc.
I like to look through J. Crew's "lookbook" for inspiration, and also Anthropologie (although, I rarely purchase anything there--I just use it for ideas because they are pretty expensive for the quality). Newport News is another that I like to just browse through sometimes (although, I've never purchased anything from them--does anyone know anything about their quality?). If you're over 40, Coldwater Creek or Chico's are other options. The clothes are expensive, but generally well-made (and they have fantastic sales).
Most online catalogs will have the price of the item somewhere (or at least a link to it), and you can always just use them for inspiration, and search for a less expensive substitute if you feel the price is too steep.
