Subscription Payment via PayPal

In any case you are asked to subscribe, you could use directly PayPal, which opens automatically, if you already have a PayPal account. 
If you don’t have a personal PayPal account, you could create one at: http://www.paypal.com/gr/home
Note: It goes without saying that when you pay via PayPal your access to Metalogos issue you pay is automatic and immediate. 
As you could see, in Metalogos’ page Issue Archive there are some fixed forms of payment of issues or Institute subscriptions. 
Still, if you need to pay a different amount of money (e.g., adding postage expenses etc.) you could proceed and transfer money to the Systemic Association of N. Greece Pay Pal account which corresponds to email: metalogos.seve@gmail.com