How many licences will be needed?

Hi,

I’d like to contribute to your crowdfunding.
I’m wondering how many licenses I will need. Basically, I have one productive site. But with WP Clone, I intend to create copies for testing purposes or for migrating to a new site – locally with InstantWP, on a different server.

Is one license enough for this? Or how is the number of required licenses determined?

Regards,
Judith