This is a donation based class to help raise funds for Anna Mantell's hospice care. From the GoFundMe page:
Friends of our community’s beloved Anna and Peter Mantell,
Thank you so much for the outpouring of care for Anna and Peter. At the suggestion of many of you, we have set up a gofundme for Peter and Anna for Anna’s return home to hospice care and for the expenses they will be facing in the weeks and months to come.
Donations can be made at the studio or on the GoFundMe page: https://gofund.me/8778618d