I'm happy to find an online philatelic shop for Slovakian stamps "Pofis"!
And I have question:

Is Pofis possible to offer the sheetlet if I order 10 stamps, for example, a sheetlet contains 10 stamps?
Or I must make a special requirement when I place an order?

And how about the minisheet? Should I also make a special requirement?

Please kindly let me know and best regards

If the stamps are issued in a sheetlet of 10 stamps and you order 10 stamps, you will receive a full sheet.
The same with miniature sheets. We never put out stamps of miniature sheets (block).
But if you wish, you can also make a note in the shopping cart (Add note).

Is there a way that I can quickly order all of the 2013 stamps? Singles plus any packaged collection.
Also a complete set of 2013 FDC and cards and stationary
And all mini sheets and sheetlets

you can send your mass order (description, amout) to email pofis.trade@slposta.sk and i think they manage it to you.