@Vero thank you very much!
Just few more clarifications (please don't waste your weekend answering, as it could definitely wait):
Is there a way do deactivate license from a Mac for Single license, in case I'd want to switch to a new Mac and retire/sell the old one?
Without purchasing I can't see if it's possible to upgrade Single to Mega Supporter license: https://www.alfredapp.com/shop/upgrade/. Is that possible? If yes, what would be the current cost for newly purchased Single license?
Thank you for your answers, enjoy your weekend, and greetings from Poland!
Max