How to prepare, compare, and evaluate proposals so founders and growth teams can secure revenue-focused, attribution-clean marketing retainers.
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Campaigns average a 300% return on ad spend across R50M+ in managed budget.
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Budget requirements vary by industry, funnel and competitive intensity, but many advertisers need several thousand dollars per month to collect statistically useful conversion data; smaller budgets can still work if campaigns are tightly targeted to high-intent keywords or remarketing audiences. Prebo Digital designs spend strategies to prioritise profitable channels and scale when unit economics support it.
For eCommerce campaigns the focus is typically on Shopping, dynamic remarketing and ROAS-driven bidding tied to LTV, while B2B emphasises lead quality, account-based targeting, longer attribution windows and CPL/CPA optimisation. In both cases measurement, funnel optimisation and cross-channel attribution are prioritised to ensure spend drives revenue, not just clicks.
Prebo Digital implements clean data pipelines using GA4, Google Tag Manager, and server-side tracking, and ties platform data to on-site conversions and offline events where applicable to reduce attribution bias. Multi-touch attribution models and consolidated reporting are used to align spend with revenue and lifetime value rather than platform-reported last-click metrics.
Prebo Digital offers end-to-end Google Ads services including account audits, campaign strategy and setup (Search, Shopping, Display, Video, Remarketing), bid and budget management, conversion tracking implementation, and ongoing performance optimisations focused on revenue outcomes.
Time to profitability depends on product margins, funnel conversion rates, tracking accuracy and budget; an initial data-collection and learning phase commonly takes 4-8 weeks, with structured optimisation and scaling typically assessed over several months. Prebo Digital focuses on iterative testing and measurement to improve profitability rather than short-term traffic metrics.
In This Article
Provide core inputs
Compare by outcomes
Insist on measurement
When you are requesting a quote from a performance marketing agency, expect the process to be diagnostic-first: agencies will assess your current funnels, tracking fidelity, and unit economics before sizing scope and cost. A strong proposal ties channels to revenue outcomes (CAC, LTV, MER), not just clicks or impressions. This guide explains the inputs agencies need, common pricing models, and how to compare apples-to-apples proposals for US-based eCommerce and B2B businesses.
Agencies typically price one of three ways: a flat monthly retainer for strategy and execution, a percentage of ad spend (managed spend fee), or a blended performance fee tied to measured milestones. For US clients, clarify whether the quote includes media spend, creative production, and tracking setup. Ask for pricing shown in US$ and whether taxes or third-party costs are excluded.
When requesting a quote, ask agencies to break out line items so you can compare scope. Typical items include:
| Item | Typical US range |
|---|---|
| Measurement audit | $3,000 - $10,000 (one-time) |
| Tracking & server-side setup | $2,000 - $8,000 (one-time) |
| Monthly retainer (strategy + media) | $4,000 - $15,000+/month |
These are estimates and can vary by agency expertise, channel complexity, and data engineering needs. If you want a faster starting point, Prebo Digital’s Services Overview details typical engagements and channel specializations on the agency side: Services Overview.
If you need a template to structure a quote request, start from your homepage and metrics snapshot so agencies can assess fit quickly: Prebo Digital homepage.
When you receive multiple proposals after requesting a quote from a performance marketing agency, compare them on scope, measurement clarity, and expected revenue impact. Don’t default to the lowest headline price-prioritize proposals that show how they will protect attribution accuracy (server-side tracking, conversion modeling) and how they measure incremental revenue.
A mid-market Shopify store with $50,000/month ad spend requests a quote to reduce CAC from $60 to $45 while maintaining ROAS. An agency proposal that includes a $6,000 monthly retainer plus a $2,500 one-time tracking audit may show a path: measurement fixes (server-side), channel redistribution, and CRO tests. Estimates like these should be labelled as projected ranges and reassessed after a 60-90 day test window.
Negotiate clear acceptance criteria for deliverables and an initial 90-day pilot with defined checkpoints. Ask for a breakdown of what is excluded (e.g., media budgets, third-party creative vendors) and whether reporting will include raw event exports or just dashboards. For agency experience and team fit, review the About page to confirm approach and core services alignment: About Prebo Digital.
Proceed when a quote demonstrates measurable milestones (first 30/60/90 days), clear attribution improvements, and projected impact on CAC or MER. If you want a direct next step after reviewing quotes, Request a Growth Audit or Book a Free Strategy Call with the agency contact path: Contact Prebo Digital.
Ensure the contract specifies reporting frequency, data exports, and reconciliation methods between platform-reported conversions and attributed revenue. For many US merchants, server-side tracking plus modeled conversions reduces variance and improves pacing. Ask vendors how they will validate results against your payment provider (Stripe, Shopify Payments) and how often they will update attribution windows.
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