--- title: "Stop Doing Free Strategy: How to Design a Paid Agency Diagnostic" description: "Design a paid agency diagnostic around a decision buyers need to make, with useful deliverables, clear boundaries, and value beyond the next pitch." url: https://timkilroy.com/blog/paid-agency-diagnostic date: 2026-08-27 updated: 2026-09-25T01:57:24Z category: "Agency Sales" image: https://cdn.sanity.io/images/7lzb16lr/production/76a86b38c5cf4c3862d38701dd3fd99c18ef7cb8-1200x630.png?w=1200 author: Tim Kilroy --- # Stop Doing Free Strategy: How to Design a Paid Agency Diagnostic _Design a paid agency diagnostic around a decision buyers need to make, with useful deliverables, clear boundaries, and value beyond the next pitch._ ![](https://cdn.sanity.io/images/7lzb16lr/production/76a86b38c5cf4c3862d38701dd3fd99c18ef7cb8-1200x630.png?w=1200) You spent six hours reviewing the account, found the problem, and explained how to fix it. The prospect thanked you. Their internal team will take it from here. That can happen when you turn a sales conversation into a working engagement without agreeing that anyone is buying one. Charging for the work can make sense. But putting a price on your free audit won't magically turn it into something people want. ## Sell the decision they need to make "We'll audit your marketing" describes your activity. The buyer needs a reason to pay for it. What decision are they struggling with? Whether to increase acquisition spend? Whether the conversion problem sits in the campaign or the site? Whether to rebuild the offer before adding another channel? A useful diagnostic reduces uncertainty around a defined decision. It establishes what you can find out, what evidence you need, and what the buyer will be able to do with the answer. That is much easier to evaluate than a promise to deliver a comprehensive assessment of everything. Comprehensive can be another word for nobody chose a priority. ## Keep discovery useful without giving away implementation You still need to understand enough to judge fit. A paid diagnostic should not become a cover charge for learning what your agency does. In [discovery](https://timkilroy.com/agency-discovery-call-playbook), establish the problem, context, stakes, and whether your expertise is relevant. Explain how you would investigate further and why the additional work is necessary. When the next answer requires account access, detailed analysis, stakeholder interviews, or recommendations specific enough to implement, you may be entering paid work. Say so plainly: "I can explain the issues we'd investigate. To recommend where you should move the budget, we need to review the underlying data and reconcile it with how your sales team handles the inquiries. That's the work in this engagement." You can be generous with understanding and clear about where your time becomes a project. ## Make the output useful if they never hire you again Here's an illustrative diagnostic for a company unsure why inquiries aren't becoming suitable opportunities. The decision is whether to fix targeting, qualification, or the handoff before spending more on acquisition. The scope might include a defined sample of recent inquiries, interviews with the marketing and sales owners, and a review of the current qualification rules. Specify the time period, records, and access before starting. The buyer receives: - A map of where inquiries are being lost, with the evidence behind each finding. - A distinction between confirmed problems and hypotheses requiring further testing. - A prioritized recommendation explaining what to change first and why. - An implementation brief with owners, dependencies, and a way to judge whether the change helped. They should be able to use that brief with you, with their own team, or with another qualified provider. If the final presentation is 45 minutes of "hire us to find out," you've sold them a trailer. ## Price the actual assignment Start by defining the work and estimating the people, time, and direct costs required. Include senior review and the buyer's working session, not just the analyst's first pass. Then test whether the decision is valuable enough to the buyer to justify a fee that makes the work worth delivering. If the economics don't work, change the scope or decline. Don't bury a loss inside the sales budget and call it a strategic investment because you hope a retainer arrives later. Be explicit about boundaries. Which business unit is included? How much data? How many interviews? What happens if the required access never appears? Put those answers in the [proposal](https://timkilroy.com/proposal-playbook). A small engagement can still become a spectacular scope disaster. ## Make the implementation conversation honest At the end, review the findings and the choices they support. Sometimes the next move is work your agency can do. Sometimes it's an internal change. Sometimes more evidence is needed. Present those paths without forcing every diagnosis toward your most expensive service. A diagnostic is one kind of [upfront offer](https://timkilroy.com/blog/upfront-offers), and the same rule applies. It has to be worth buying on its own, and it works best when the buyer is in the room doing it with you. If you offer to credit the diagnostic fee against implementation, make that an explicit commercial choice. Consider whether the combined engagement still makes sense for you. The diagnostic should stand on its own even when you offer that incentive. Avoid promising outcomes that depend on access, execution, or decisions outside the assignment. You are selling a defined investigation and recommendation. Be precise about that commitment. ## Know when a diagnostic creates unnecessary friction Some buyers already understand the problem and have enough information to commission the work. A paid diagnostic may slow them down without improving the decision. Others have a problem too small to justify the investigation. Give them a useful direction and move on. The test is whether the additional work helps this buyer make a consequential decision with better evidence. If it does, explain that value. If it doesn't, don't manufacture a mandatory first phase. [SalesOS](https://timkilroy.com/sales-os) helps put these boundaries into your sales process so your team knows how to qualify an opportunity, explain the next engagement, and stop accidentally delivering it before anyone signs. Your best thinking deserves a sensible commercial home. Give it one. --- Canonical URL: https://timkilroy.com/blog/paid-agency-diagnostic