Understand why an agency quote changes
An agency price reflects a set of assumptions about scope, people, volume, timing, client input, risk and third-party costs. When those assumptions differ between suppliers, headline figures are not directly comparable. The aim is not to force every agency into the same solution; it is to make the important differences visible.
Accuracy also has a limit before discovery. If the brief contains genuine uncertainty, ask agencies to separate work they can price now from work that needs validation. A staged estimate with a clear decision point can be more responsible than false precision.
Put this into practice
- Defined outcome and priority audience
- Known scope, volumes and service expectations
- Timing and approval assumptions
- Client skills and responsibilities
- Uncertain items separated for discovery
Give every supplier the same usable inputs
Provide the same brief, background material and clarification answers to each participating agency. State available budget context, required dates, existing contracts, systems, content, data quality and approval constraints. Withholding important information can produce proposals that look different because the agencies guessed differently.
Invite questions through a fair process and publish material answers to all participants where appropriate. If you change the scope during the process, identify the change clearly and allow suppliers to revise affected assumptions rather than comparing an old quote with a new brief.
Put this into practice
- One current brief and document set
- Shared answers to material clarification questions
- Budget context and inclusions stated
- Existing assets, access and constraints described
- Scope changes recorded and communicated
Ask for separate cost categories
Request a cost schedule that separates setup or strategy, ongoing agency service, media, creative production, technology, data, external specialists, travel and contingency where those categories apply. Ask whether third-party costs are passed through at cost, carry a fee or are included within another line.
Make billing frequency, tax treatment, minimum commitments and payment timing clear. If remuneration is linked to media spend, hours, outputs or performance, ask for the calculation and test how it changes under realistic scenarios. The commercial label matters less than the underlying formula and service it buys.
Put this into practice
- Agency remuneration and billing basis
- Media and platform costs
- Production, talent and usage rights
- Technology, data and external specialists
- Travel, contingency and tax treatment
Price the division of work and important assumptions
Ask each agency to state what your team must provide: content, development, data, approvals, subject-matter access, production coordination or campaign assets. Estimate the internal effort and check whether your people can meet the assumed turnaround. A cheaper proposal can become costly if it shifts work to an already constrained client team.
List assumptions beside the quote, not in an easily missed appendix. Include volumes, channels, markets, meeting cadence, revisions, response times, access and dependencies. Ask which assumptions would trigger a change and which variations the base fee can absorb.
Put this into practice
- Client deliverables and named owners
- Expected approval and feedback times
- Included volumes, channels and markets
- Meeting, reporting and support levels
- Events that would change the estimate
Model likely optional work and scenarios
Identify work that is not certain but reasonably foreseeable: an additional campaign, landing page, production day, channel, market, research task, dashboard or urgent request. Ask for rates, unit prices or an estimating method so a likely change does not become an unstructured negotiation later.
Compare a small set of consistent scenarios, such as expected activity, a reduced scope and a higher-demand period. Scenarios are not forecasts or promises. They show how each commercial model behaves and where approvals, minimums or capacity constraints become important.
Put this into practice
- Expected base scenario
- Reduced or delayed activity
- Higher volume or an added workstream
- Pause, cancellation or transition
- Approval threshold for additional work
Carry pricing rules into the agreement
Before appointment, align the final scope, cost schedule and assumptions. Record who may authorise extra work, the information required in an estimate, how third-party expenses are approved and when fees can be reviewed. Ensure the written terms reflect the commercial explanation used in selection.
Plan for reconciliation and change. Agree how media or external costs are reported, how unused allowances are handled and what happens when priorities shift. Obtain suitable professional advice for contract, tax, procurement or regulatory matters relevant to your organisation.
Put this into practice
- Final scope and price schedule agree
- Approval authority and change process stated
- Third-party expense treatment recorded
- Review, pause and termination terms understood
- Handover and transition costs considered
Common questions
Should I tell agencies the available budget?
Usually provide a usable range or affordability boundary and explain what it must include. If approval is staged, state what can be committed now and which parts are optional. This helps agencies propose a feasible scope instead of guessing your limits.
Why are agency quotes so different?
They may assume different deliverables, people, service levels, client responsibilities, third-party costs or risks. Put each quote into the same scope-and-cost table before concluding that one supplier is simply cheaper or more expensive.
Is a fixed price always more accurate?
No. A fixed price can work for a defined scope with clear assumptions and change rules. Where important requirements remain uncertain, a staged estimate or controlled time-based phase may describe the risk more honestly.