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Discover what makes us different
Our average client sees a 35% lift in conversion rate across 150+ CRO projects.
500+ tests run across landing pages, checkouts and lead capture forms.
Every change is backed by analytics, heatmaps and real session data.
Certified VWO partners running enterprise-grade experimentation programmes.
Here's what sets us apart from the competition
Find answers to common questions
Prebo integrates CRO work with GA4, Google Tag Manager, server-side tracking, and common ecommerce platforms like Shopify and WordPress to ensure accurate event capture and attribution. We also set up ETL or data-layer solutions where needed so test results feed into a single source of truth for decision making.
Common experiments include A/B tests, multivariate tests, funnel experiments, UX and checkout performance optimizations, and technical fixes that reduce friction. Test duration depends on traffic volume and required statistical power but typically ranges from several weeks to a few months per experiment cycle.
We prioritise revenue-per-visitor, conversion rate, average order value, customer acquisition cost (CAC), lifetime value (LTV), and marketing efficiency ratio (MER), alongside statistical significance for experiments. Clean attribution and centralized data pipelines ensure those metrics reflect true business impact rather than platform-reported figures.
CRO is designed to improve conversion efficiency and attribution accuracy, which can increase revenue and profitability when combined with product-market fit and adequate traffic. Outcomes vary by business and depend on test quality, funnel issues identified, and downstream economics, so results are not assured and are measured against revenue-focused KPIs rather than vanity metrics.
CRO is the systematic process of improving a website or funnel to increase revenue per visitor. Prebo Digital uses a technical-first, analytics-driven approach with hypothesis-driven experiments, server-side tracking, and funnel-level optimization focused on measurable revenue outcomes.
In This Article
Typical price ranges
What affects cost
Budgeting approach
Website optimization services in the United States span a wide range depending on scope, technical depth, and expertise. This guide outlines typical hourly rates, project fees, and monthly retainers for conversion rate optimisation (CRO), UX improvements, performance analytics, and technical tracking. Use these estimates to set realistic budgets and compare vendor proposals.
| Service Type | Typical US Pricing | Notes |
|---|---|---|
| Hourly consultancy | $100 - $250 / hour | Short engagements, audits, strategy hours |
| One-off optimization project | $3,000 - $30,000 | Scope varies: A/B testing, UX redesigns, tracking builds |
| Monthly retainer (CRO + tracking) | $2,500 - $15,000 / month | Ongoing test roadmaps, analytics, and optimization |
| Technical tracking & server-side setup | $5,000 - $40,000 | GA4, GTM, server-side, and attribution pipelines |
These ranges are US-focused estimates; actual scope and outcomes determine final cost. For multi-channel ad attribution, data engineering, or complex eCommerce stacks (Shopify Plus + custom apps), expect bids toward the higher end.
Client site -> GTM (client) -> Server-side endpoint -> Analytics (GA4) / Ads -> Attribution layer TOF: impressions & clicks -> MOF: product view & add-to-cart -> BOF: checkout & purchase
Accurate pricing often requires an initial audit to map tracking gaps. A short discovery (8-20 hours) frequently surfaces missing server-side events or attribution distortions that materially change expected ROI calculations.
If you're comparing vendors, ask for sample test roadmaps and a costed split between strategy, build, testing, and reporting. For an outline of services that typically fall under optimization engagements, see our services overview which explains managed CRO, tracking, and media functions.
If you want context about how an agency like ours structures work and long-term partnerships, our homepage explains the performance-first approach to profitable growth: Prebo Digital - revenue-focused marketing.
Compliance note: In the US, state privacy laws (for example CCPA in California) and cookie consent requirements can require additional engineering for consent mode and server-side handling. Factor legal and compliance work into technical budgets.
Below are three US scenarios to help translate ranges into budgets. Figures are estimates to illustrate how scope affects cost and potential impact. All currency shown in USD.
Profile: $25k monthly revenue, basic analytics, no server-side tracking. Recommended: 6-8 week project for foundational CRO and GA4 setup. Estimated cost: $3,000-$8,000. Primary outcomes: baseline conversion uplift hypotheses, priority UX fixes, and standard GA4 event mapping.
Profile: $150k monthly revenue, moderate testing history, multiple marketing channels. Recommended: 3-6 month retainer that includes advanced attribution, server-side tracking, and a test roadmap. Estimated monthly retainer: $5,000-$10,000 / month. Primary outcomes: clearer CAC and MER, prioritized experiments, and clean attribution to inform media buys.
Profile: lead-gen funnel with multiple touchpoints, CRM integration (HubSpot). Recommended: technical build for tracking + iterative CRO roadmap. Estimated cost: $10,000-$40,000 for initial build + $3,000-$12,000 / month for ongoing optimization and reporting. Primary outcomes: reliable lead attribution, reduced wasted ad spend, and improved MQL → SQL conversions.
Many teams rely solely on platform-reported conversions (ads managers) which can misattribute performance when browser restrictions or ad-blocking affect client-side signals. Prioritise server-side tracking, GA4 event validation, and a consolidated attribution layer that reconciles ad platforms with backend conversions. That technical lift is often a one-time cost but materially improves decision-making.
Start with a short discovery audit (8-20 hours) that maps the funnel (TOF → MOF → BOF), lists missing events, and projects testing cadence based on available traffic. A clear audit lets you convert vague proposals into apples-to-apples quotes. For background on our process and how we combine strategy, build, test, and scale, see our about page describing our technical-first approach.
| Line Item | One-time | Monthly |
|---|---|---|
| Audit & strategy | $1,500-$6,000 | - |
| Technical tracking (server-side) | $3,000-$25,000 | $200-$1,000 (hosting/maintenance) |
| Ongoing CRO retainer | - | $2,500-$15,000 |
When evaluating proposals, look for transparency in how hours break down across strategy, development, testing, and reporting. A clear roadmap reduces scope creep and makes pricing predictable.
If you need a practical next step: conduct a short audit to surface tracking gaps and prioritise low-effort, high-impact experiments. That audit will convert wide cost ranges into a precise investment plan tied to revenue outcomes. Explore the framework or see a real-world example to learn how these numbers map to specific site improvements.
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