Milwaukee's market is relatively new, as these things go. I've only been once, shortly after it opened, but as I recall it was pretty pricey and touristy, less like the markets I've been to in Toronto, Philadelphia, Ann Arbor, etc., that seemed more aimed at everyday local shoppers.
In my opinon the public market has been a total failure from what they envisioned. It is, as Vital Information stated, a glorified food court. Yes you can get meat and cheese but good luck finding a local vegetable.
I think the cost to construct it was so high that they have to charge expensive rents which no artisans or local farmers can afford. Its sad because there are two indoor farmers markets in the area (West Allis and Oconomowoc) and both of them have exactly what should be in the market. Winter vegetables, heritage pork and other meats, locally crafted sausages, dairy products, local apple ciders, eggs, etc. All of this should be at the public market but it isn't and that is a shame. Here is what is at the Milwaukee County Indoor Farmers Market has: http://www.mcwfm.org/producers.html
Don't get me wrong, I am glad they were able to reinvent themselves into something that works from a business standpoint but its still disappointing.