I've never even heard of Patreon.
One advantage of Pay Pal, is that it's been around long enough that most people are familiar with it. And seems to be ubiquitous.
I know nothing about the financials though.
Do we need a paid membership amount? In days of yon, such things generally covered postage and paper. Is it worth the bother to even track? There could be some income from ticket sales and merchandise.
Would simply passing the hat occasionally to cover other items such as forum costs and wooden paddles work? Is there enough of us willing to throw $20 in occasionally, rather tha