Looking for original apparel with cartoons

We are looking for original apparel of Matt Groening, The Simpsons, Futurama and other cartoons stuff. Also it can be not original but "best copied" of original t-shirts.
To begin with we need to understand demand for the given goods in our region.
We don't know what volumes we can take per/month in future, but we want try to startup.

Can we discuss the details,prices and volumes?