Fan of the Beerware and Dontion License, there is no cost or limitation.
The workshop is free under a none commercial licence.
If you want to remunerate my work, you can contribute by making a donation:
www.patreon.com/2AM - https://www.paypal.me/JamsCenter
Or you can contact me to organise a workshop with your teams.
http://jams.center/ - jams.center@gmail.com
Thanks you,
Strée Éloi