Short answer: You need a Commercial License subscription.

All the designs listed by McGybeer are for personal and non-commercial use only.

Free designs are protected under the CC BY-NC-ND 4.0 license, which means that, if you give the proper credit,  you can share the original material. You can not use it commercially in any way, even the remixes/derivatives.

Paid designs are uploaded to paid platforms, and the license of these platforms complements the license above. All of them state a strict non-commercial use of the files without the designer's permission.

Therefore, you need authorization to sell prints of any of my designs.

That's really easy. Just join one of the Commercial License subscriptions I've linked above. You will be authorized to sell prints as long as your subscription is active. Please, read carefully each subscription description. Not all of them have the same benefits.

IMPORTANT: For Canada and Russia Commercial Licenses are restricted due to exclusivity agreements:

• Commercial Licensing in Russia is only available on Boosty thanks to a partnership with Corntoys: https://boosty.to/corntoys
  For additional information, please contact info@corntoys.ru

• For Canada, please write to support@gamergadgetry.com

If you are printing a few for your family and close friends, that's fine. But you can't ask them for money, even to cover the printing expenses. Because that's considered commercial use and that's not allowed, as explained above. For commercial license information read the previous point.

If you have found any illegal activity, please, report the link in this form. Thanks a lot for your help.