Before you invest in this type of franchise I would urge you to investigate the following:

Super Suppers franchises
Meal Assembly Watch - A community resource for meal assembly store owners

There is a great deal of information about these franchises and for many they have not lived up to their hype. Customer grow tired of the food, don't have time to prep the meals and their commitment is short lived.

They are tricky franchises with many pitfalls to be aware of.