Fresh home-smoked bacon, lettuce, and a just picked within an hour ago sliced tomato, mayo, on a lightly toasted onion bagel from H&H in NYC.
That's a priceless sandwich. :D
I would go a little more gourmet than you in some ways. I would want 2 to 3 slices from a freshly baked wholemeal loaf (commonly available from chain-owned bakeries here in NZ), adding fresh lettuce, tomatoes, and cucumbers as vegetables, with chicken schnitzels as the meat, adding tomato relish or honey mustard as the backdrop (mayonnaise is fine, but it must be freshly made shouldn't be prepared with too much vinegar - bottled version is too sour). In New Zealand's supermarkets sandwiches like this sell at NZ$5.50 = US$3.60.