"It almost sounds like you don't need my help at all," X noted, humour in his voice. "In fact, it almost sounds like you already have some ideas of which merchants to start with. Lead the way."

X's tone is such that even if he's wrong, and Devin doesn't have the first idea where to start, that this is how to start. Make a wild guess, and pretend you know what you're doing. They have all day, after all -- or at least, X does -- and can take all the time they need.