A BBQ chain called Rudy's sells sandwiches with your choice of meat for around $4.50. All the extras (pickles, onions, BBQ sauce, sliced bread, etc.) are free.
So in practice $4.50 gets a bun, 1/3 lb. of meat, half a loaf of bread, and a ton of BBQ sauce.
It isn't as tasty as some local places but the price is much better.