I got some nice RP out of the LH some time ago. I stopped and after a few minutes of bargaining I gave them the cash, wished them luck and ran off to NY.
On one run to Dublin I had a guy who just started shooting me from a gunboat out of the blue, and then chasing me. While I turned on my cruise engines I asked him what does he want, he replied "2 mil" and nothing more. I didn't stop to that, pure and simple. If they want the cash they have to work for it, and that means at the very least a good bargaining.