Fuck, where in Chicago are they $3? I'll add that spot to my Chicago to-do list whenever it is I have a chance to get out there... I like the version (and a bunch of their other sandiwches) at BAOGETTE in NYC. Ba Le, right around 5000 N Broadway. $2.95, and also the best banh mi in the city. Also, Tank Noodle is right across the street, which is probably the best pho in the city. I haven't explored much pho in Chicago, but I know a few people who say Tank Noodle is def the best. OH and while you're there you can pop into La Patisserie P. Really great French/Vietnamese pastry shop.