How should I react?

Random one this. I met this guy in a bar recently through a friend. I was told he owns some sort of a company that makes gun parts based near Kinsale. He went into a big spiel about the company, showing me photos on his phone. He shows me a photo of this fella who seemed to be testing out a gun, and says something to the effect of "this guy has killed 500 people". Later I was thinking to myself if that was really true, then wouldn't that assassin not have revealed that to the guy I was talking to? I'd like to have asked him "so if I wanted you shot, how much would I have to pay him?" and seen his reaction.