This is something that I have been thinking about should I need to retire at anytime. CC's that I have known have had great difficulty in selling their business as an ongoing concern, and usually end up just selling their equipment.
I have been in this business for 40 years and have built up excellent repeat business with customers and a good relationship. If I was to retire tomorrow, customers calling, would be disappionted that I couldn't carry out the work they wanted doing. I am confident though, that they would take my recommendation of who to call.
I could either offer these quality leads as a pure, as when they come in deal at £? per lead.
Or, I could sell my database outright and promise to relay on, all calls that I continued to receive for a couple of years or indefinately.
You can lose a lot of money on hit and miss marketing, and providing the CC in question is charging around the same as myself, i think this would be an excellent deal for them. A trial period would prove it's worth.