When to share rates and some form of document in a complex B2B technology consulting sale

Our normal process is to:

1. Understand the problem
2. Quantify the problem
3. Write a light-weight document (call it a mini proposal) where we share the problem, why it is worth solving, our recommended (high-level) solution and our team rates.

Note that at this point it is unclear how long it would take and how big of a team is necessary to provide the solution.

We don't want to spend all the effort of scoping, defining and estimating if the timeframe to come up with a price until we have some form of commitment.

In any case, we have seen clients go cold after having shared the light weight document, in essence avoiding future meetings.

Is this the right time to share rates or this kind of information?

What have you found work well here?