Here is a good link to some info about running workshops → You should run a workshop!
As the person giving the workshop you can charge attendees whatever you want and you get to keep 100 percent of the proceeds of your workshop. Folks have used Eventbrite for signups and collecting payments. Other folks have used Paypal, eTransfer, cash as payment options. Whatever you prefer really.
Past workshops have shown that lower costs usually mean more participants.
One thing to keep in mind is that VHS is in no way responsible for any costs associated with any particular workshop. It is up to the person giving the workshop to manage all aspects of the workshop including scheduling, financing, teaching, etc. You can usually find someone to be a bottom liner for your event if you’re not yet a key holder.
If you are planning just a screen print run of VHS t-shirts (i.e. no workshop) then perhaps just make a Talk post to find out interested folks and ask them to eTransfer you $$.