It's in Milwaukee, you might be thinking of Onieda.

If the Big Blind is $5 buying in for $600 makes it a much better game than only being allowed to buyin for $100 or $200.

The only reason they have to make the max buy-in so low is so suckers who think they are better off only risking $100/$200 will want to play. (but by the time you sit down you will be up against people with thousands in their stacks that have been there for hours, you better practice your fancy "all-in" move...)