You should be able to get out for $40 a person, as long as you don't order wine.
Bistro Banelieue is very good, and not spoken of much despite being one of the best bistros in the city... I think it's because of its suburban strip-mall location. A shame, really.
We don't make it out there much (Hemmingway's in Oak Park is closer to my parents and nearly as good), but on my three trips there I rather enjoyed (or my dinner-mates enjoyed) the pate/charcuterie app, which had a chicken pate, foie gras, and assorted meats/mustards/cornichons/etc; the soups are generally very good and very rich; the frites are exceptionally tasty.
My experience is that the reductions and such accompanying the steaks aren't always well-matched, unfortunately. So it may be wise to skip all steak except with frites...
It's been probably two years since my last visit, though, so the menu and cooking may have changed. But my experiences were always very positive.