I’m moving in the direction of making transactions automated only when
the customer buys coins with SMS payment provided by ZayPay. Pecunix
is the only reliable and practical enough e-currency that I’d store my
reserves in, but the exchange fees are quite high (about 5%).
When I’m buying coins, my recommended payment method would be IBAN
transfer. I could also say “contact us if you want to buy/sell with
any other payment option” and handle each order separately. I could
manually accept single orders with even PayPal, as long as I don’t
store my money there and the customer pays the fees.