3) As for purchasing, say something in amazon priced in euros in an euro denominated country, there would be no commisions/fees at all? (ie, I buy a toaster priced euros 10 and euros 10 is all I get charged in my card?).

4) I'd send bitcoins to fund my balance, no commisions applied from uquids side, but what bitcoin price would be applied? Or would I hold the total bitcoins I've sent to fund my card and can change the bitcoins to euro whenever I need to at the rate most favourable to me?