Is it useful? Yes. Is it a bit frustrating? Also yes. Someone was trying to donate and canceled because they wanted a $30 donation to make a donation of $200 PLUS on my end it took just over 3%. Should have read the fine print.... my fault, but still. For people of modest means trying to donate to people of little means, this is just a bit much to ask. For a small $1500 goal, it seems they stand to make $150+ for me, that's a lot of money.