Two consulting quotes can describe the same headline service while promising very different work. One may include interviews and implementation support; another may cover only a report based on supplied information. Normalise the scope before comparing the price.
Build a comparison sheet
Use the same rows for each proposal: problem understanding, deliverables, method, dependencies, timeline, revision process, commercial terms and handover. Mark missing details rather than assuming they are included.
Ask whether the named specialist will perform the work or supervise someone else. Clarify the client's time commitment, because workshops and data preparation can materially affect delivery.
Test the recommendation
Invite each candidate to explain their first milestone and what they expect to learn. Ask what might cause them to change their approach. This reveals whether the proposal reflects your situation or is a generic package.
For research-led consulting, the SBA's market-research guidance offers a useful reference for questioning the evidence base. A recommendation should identify its sources and limitations.
Resolve differences before selection
Send a short clarification list covering material gaps. Request a revised scope when exclusions or assumptions change. Avoid quietly expanding the scope after accepting the lowest quote.
Choose the proposal that best matches the problem, risk and available resources. A small discovery phase may be sensible when the uncertainty is too high for a reliable full-project estimate.
Keep the accepted proposal and clarification record together. They become the reference for later decisions and help prevent disagreements about what was included. Browse consultants by category using a consistent brief so these comparisons remain meaningful.