I’m a relatively new poster here, so glad to join the discussion!
For those in Chicago, I wanted to recommend Plum Market (1233 N. Wells St) in Old Town as a retailer worth checking out if you’re in the area. They have a small, but very well curated selection of wines, including some smaller producers that you can’t find on the shelves of Binny’s.
For example, I’ve found interesting bottles on their shelves including Gonon St Joseph, Jura wines from Bourdy and Puffeney, Baudry Chinon, Janasse CDR and CDP, as well as a solid selection of German/Alsatian rieslings and grower champagne. They also have a helpful staff (particularly Sean and Anthony) to point you toward the hidden gems.
Prices are generally reasonable, although some wines can certainly be found for cheaper online. They also have a nice wine bar toward the front with a pretty decent by-the-glass selection.