All the money that you donate goes to the artist or artists. We don't take a penny but - as previously stated - are more than happy to bask in their reflected glory.
Refunds: We have to be a bit elastic about this. Ordinarily, 'tickets' are non-refundable. We commit to paying the artist a fee and since we don't take anything ourselves, there's a danger we'll have to make that money up out of our own pocket. If we can sell your 'ticket' on then we will - but if we can't, then the money will go to the artist, rather than back to you. Sorry.