Have no idea for the costs of a useless thing like that. But as it is a fictional startup, you also can assume a fictional price of let's say 800, or may be 1800 bucks, whatever currency you want to have.
For realizing your idea, you also can use a simple smartphone, OK, it can't move around, but many people have it always with them, so it walks around passively.
And if you search in the app store of your phone, I bet you will find an app, that does at least a part of your quests.
Just my 2¢
Well we have to get a "reallistic" sum of production costs, thats why i posed the question. Also the point of it is to have a physical "companion", that motivates/helps you with tasks. Anyone can set an alarm/reminder for stuff, but how many do actaully follow throught with it. The point is this forces you to be active and builds healthy lifestlye habbits.
Thanks for the reply thought, would also appriciate if you had any ideas of features we could add to the design.