One of the things that sandwich shops - the sort where you get to choose your own fillings from a variety on display - occasionally fall down on is when they don't have a sensible way of pricing non-standard combinations.
On selling sandwiches
One of the things that sandwich shops - the sort where you get to choose your own fillings from a variety on display - occasionally fall down on is when they don't have a sensible way of pricing non-standard combinations.