I think the police will listen to Elijah, they didn't seem to beat the shit out of him this time that they took him in for questioning ... I think they don't like him, but I also doubt that they would just ignore a gift like that.
Good question, but at least he's trying to do the right thing. Interesting how Helena brought up the "use drug money to help others" thing again. I'm not sure if it's quite as simple as she thinks, though.