Sir Gabriel coughs and blush on part where lady Luna tells men paying only wives, mistresses and so on and says; "I give the share because you were partner during that job and had done good job at it. That's all. Also if you got trouble for finding someone sell you study scrolls I could come along help you get find some. Also Lucian got arrested and he was mage was he not? So you could copy spells from his spellbook then once it's confiscated from him. As it's then property of the king and your learning more spells help improve in your duties." He waited lady Luna either take the gold or dismiss them completely, his hand is waiting still and offering the pouch still.