Paypal receipt is your authorization to use my font in commercial purpose.
You can buy a license for my font in dollars in this link:
http://vtksdesign.com/matchform/view.php?id=28457
or in euros here:
http://vtksdesign.com/matchform/view.php?id=24391
Feel free to contact me if you need more information.
douglas@vtksdesign.com