Robots in the mall

I am a student designing a robotics retail store that will involve the following areas:

A test zone
A custom made and parts counter
A repair area
A build your own robot area

And the overall focus of the store will be on insect related robots however there will also be roombas and quad copters, that sort of thing.
I need to field my demographic and see who would buy, what would make you want to buy there, and what the hottest products are. Also open to any suggestions as to what kind of a store your typical robot enthusiast would enjoy/want to see.
I want regular joes to feel welcomed in this space as well. Any help would be awesome.

-Captain Jack

It’s just for a school project, however it will be presented to a panel of retail architects

Is this for a school project or are you actually planning to open a retail store?