As you may have noticed, Q is free-of-charge for non-commercial use only. If you wish to monetize your product and use Q as a part of the package, read on.
If you decide to purchase the Commercial Licence, you will be granted a CC BY license for use in your product.
Contact me at jan.maska(at)gmail.com with information about your project (i.e. expected customer base, price per unit, general purpose of your project) to receive your quote.