When requesting pizza delivery from the Domino's site I captured and modified the http request to delete the `crust_type` field. Turns out most of the price was calculated from that so I was getting incredibly cheap pizzas for a while until they found out and invalidated requests without crust selection.
Classic crust IIRC. The best thing is that even the paper receipt was lacking the crust selection, so it looks to me that every system in the pipeline looked at that `null` value, sighted, and passed it along to the next system, until it reached the cooking area where they will blame the IT guys and slap in the "default" crust. Also I waited for the day that I will receive a plastic cup with just salsa and floating ingredients, but sadly it never happened.