Yes you pay fees to deposit money onto a Visa prepaid card. I book a lot of flights on Easyjet and a Visa electron allows you to avoid the 20+CHF credit card fee /per booking. So the benefits outway the extra fees. I just finished a call with cornercard and the cornercard reload prepay VISA is not a VISA electron card but if the number on the card you receive matches a Visa electron number you can use it as a Visa electron on the easyjet site.
For example my credit number starts with 4508 which when you look on google this Issuer Identification Number matches a Visa Electron. And therefore is recognised on the easyjet website as a Visa electron.