Upgrade license path from personal to business???

I am curious as to if there is an upgrade path from the personal license to the business license? I would like to start with the personal license as I am just learning right now. Curious though as I will eventually like to try and sell once my skill set is up and the games improve a lot. Can I upgrade for the price difference or do I have to spring for the full business license price?

Thanks,

Neo-Tracer

So not possible I guess?

Can't switch between licenses at present, but if you email us when you're ready to upgrade we can arrange this for you, and refund unused time on your Personal license.

Excellent! Thank you for your reply Tom.