Organ rental company in another world

After dying, Norn transmigrated to another world. He had neither a system nor a grandfather, only the ability to transfer organs. Upon discovering a large number of disabled people in the kingdom, Norn began to put prices on his organs and rent them out. He quickly amassed a fortune, and after helping the kingdom treat a poisoned genius female mage, Norn rose to the upper class. He thought he could live a life of leisure, but a swordsman who wanted to be a pilot became his prisoner, forcing him to become a eunuch and make a living in the dungeon. Norn discovered a new use for his ability: transferring brains could control monsters! Transferring limbs could weaken monsters! By turning himself into a human stick, he could strengthen his body while lying down! ... "How much for an arm a day?" "Left arm 1 gold coin, right arm 1 gold 50 silver." "Eyes?" "Both eyes are 3 gold coins, both for 8 gold coins." "**Want to rent?" "**Well... I won't argue! What would a woman like you need these for??"