I don´t want to be rude but...be careful with the Polish Postal Service. I just bought one thing and it got "lost"...misteriously. It was the Mass Effect 1 (PC) Collector´s Edition.
They had no idea where it went and didn´t want to refund the money from it. Six months and no idea what happened. The only thing I know is that it was sent, I saw it...but I never received it.
I hope you don´t get in trouble with this and don´t find any problems, but I needed to advise.
Anyway, I´m interested on that Witcher Press Kit too