Yes, you are right, the information will help to earn, or save a lot of resources. In such a case, a service of percentage incentives for the seller of information may be necessary. That is, in the event that the information will bring income to the investor, he will give a small percentage to the information provider. Let's say 1% of the income. If we take into account that the investor will not be alone, but the revenue will be significant, this is a good stimulus for sellers of information
I believe that it would be optimal not to put any specific interest for a successful transaction, investors themselves decide how much incentives to allocate an insider