[cbartlett]

To give them benefit of the doubt, they may have already paid for it, and as it's a one time fee not included it in their monthly costs.

[greyoda]

It has a yearly subscription fees if the license is bought for use in a business

[cbartlett]

From the FAQ

Using a Personal License at Work As licenses are per-user, you're welcome to use your license key on all computers where you are the primary user, including at work.