How can they not be willing to pay a transaction fee from even PayPal for donations? Seems their options right now is to take donations via a service like Paypal with a transaction fee, or just take no donation.
It's the financial equivalent of having a tumor that will kill you and refusing the surgery because the doctor says you have a chance of dying on the table.
Of course, that conversation happened way before the site was used as a credit card validator. Trying to explain to them the bad side of charge backs and why this is a big deal is an on-going challenge. The last time I discussed it with them, they kept asking me if they were going to get stuck with all the transaction fees.
And, being a developer, my first gut instinct is stepping back and saying "you're wasting money here and here and here and here, cut down these inefficiencies and it'll all balance out." However, it's not as simple as that. Everyone needs to be on board, and the people in charge of these things are already overworked and not highly paid.
A catch-22, I suppose. I try to stay out of it as best I can. I made them the site for free in exchange for our two kids to use the club's stuff for free, and with those inefficiencies I hinted at, I can't afford to get caught in being the role of business consultant too.