Law / is commission way popular in PL business?? [5]

Hi all,

I have a problem maybe not that open to discuss but I hope you guys who are willing to share experience.

I am working in a trading co in shoes/garment item. Doing some kinda export production. Now I met a polish importer who as buyer in poland. As you know now the market is weak. I want to get continuous and order from this guy. So I am thinking whether i should talk to this guy in secret and in person. Whether i can send some proposition of money to his personal account every time when he place order to me. I guess 3% of the total amount should be attractive? Although I think this way is not quite decent but I know many people in Trading company do in this way. But I don't know whether polish people is ok with this way? I look for anyone who have idea about this. Thank you.