Allowed to profit share with middle man? e.g. i give middle man $100 (cost $90 + $10 to ship), sold for $550 ($450 profit). Agreed I get 75% of profit. so he gives me $437.5 ($550 minus 25% profit) if no profit he gives all revenue e.g. bought item $110, sold for $85, he gives me $85 keeping none.

Ustadh AbdulAziz al-Haqqan

This is upon what you agree with him akhi yes.