If i buy something for 4,99 or 9,99 euro and pay with an 10€ PSC (paysafecard) what happen with the rest? Is it still on the PSC even if it is one cent ?

Keep in mind that you'll be charged with an extra 2%, so a game that costs $5.99 (about €4.46), would now cost $6.11 (about €4.55). Assuming that even 30 cents remain on a paysafe voucher, you can indeed keep it and combine it with a future higher-price paysafe voucher to take advantage of it.
Edit: Oh wait, I forgot. For some reason, German users can't combine paysafe vouchers.

Yes, it will stay on your PSC.

so, if i buy Battle realms for 9,99 with an 10€ PSC , this would be my payment?

(9,99+2%) 10,2000 USD = 7,59550 EUR

and 2,40€ would stay on the psc

:(

i run in a problem

the problem is Germany :( why the hell do i have to live in germany god damn it!

I can't use PSC more then once, can't combine paysafe cards! :(

because of
http://blog.paysafecardgroup.com/de/e-geld-in-deutschland-veranderungen-fur-paysafecard/

legal framework since the entry into force of the law to optimize the prevention of money laundering

well... germany... again... i hate this country, i hate merkel, ... germany is like stoneage... i wish russia would take over germany! (because i hate murica too)

:(

In this case maybe you should search for a cheap debit card. There has to be one with low fees.

I wonder who the hell would bother to laundry money using PSC when they have those limits on money transactions.

Does Germany have prepaid Visas or Mastercards? I use one for internet purchasing myself, and combined with paypal, have never had an issue.