Start up

Hi, my name is Massimo Micera and I live in Herning, I am carrying out a study for the realization of a start up and I would need to know the cost of the complete accounting for an Aps with only the owner. It is a commercial company that buys in Italy and sells in Denmark or sells in Denmark on behalf of Italian companies. In the first case he will import and then issue an invoice to the Danish customer and in the second case he will issue an invoice to the Italian customer for intermediation. Thank you for your time. Massimo Micera