Prosiłbym by ktoś sprawdził mi te kilka zdań i w razie czego skorygował błędy ;)
Hi. My name is xxx and I'm from Poland. I would like to buy some of your products and because of that I have also some questions. First of all I would like to know how can I pay for that? I would also want to know whether your company will deliver my order to my door step and how long I will have to wait for it?
Yours faithfully,
xxx