Met a wholesaler while door knocking...

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I do door to door sales. This guy was so impressed he ended up finding me down the street shortly after. He lived in a massive house. But he wants to hire me due to my talent. He wants me do cold calling to set up leads. I know I can easily do that on the side. He also said if I have real estate  leads from the doors hell compensate me for them. I know I can generate on top of what im doing with no extra work an additional 30+ real estate leads a month. Either the home owner is looking to sell, buy or something. What should I charge him? Thoughts?