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afrexai-unit-economics

// Break down your business to the numbers that actually matter. This skill calculates and benchmarks your unit economics — CAC, LTV, payback period, contribution margin — so you know exactly which customers make you money and which ones burn it.

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updated:March 4, 2026
SKILL.mdreadonly

Unit Economics Analyzer

Break down your business to the numbers that actually matter. This skill calculates and benchmarks your unit economics — CAC, LTV, payback period, contribution margin — so you know exactly which customers make you money and which ones burn it.

What It Does

When activated, the agent will:

  1. Calculate Core Metrics

    • Customer Acquisition Cost (CAC) — fully loaded (ads + sales salaries + tools + overhead)
    • Lifetime Value (LTV) — using both simple and DCF methods
    • LTV:CAC Ratio — the single number investors care about most
    • CAC Payback Period — months to recover acquisition spend
    • Contribution Margin — per unit and per customer
  2. Benchmark Against Industry

    MetricHealthy SaaSMarketplaceE-commerceServices
    LTV:CAC3:1 – 5:12:1 – 4:11.5:1 – 3:14:1 – 8:1
    CAC Payback12-18 mo6-12 mo1-3 mo3-6 mo
    Gross Margin70-85%40-65%30-50%50-70%
    Net Revenue Retention110-130%100-115%80-100%90-110%
  3. Segment Analysis

    • Break unit economics by customer segment, channel, plan tier, geography
    • Identify which segments are profitable and which are subsidized
    • Flag "toxic" segments where CAC > LTV
  4. Cohort Decay Modeling

    • Month-over-month retention curves by acquisition cohort
    • Revenue decay rate and true LTV (not the optimistic version)
    • Churn-adjusted LTV using: LTV = ARPU × Gross Margin / Monthly Churn Rate
  5. Scenario Planning

    • What happens to payback if CAC increases 20%?
    • Impact of 5% churn reduction on LTV
    • Break-even analysis: minimum retention rate for profitability
    • Pricing sensitivity: how price changes flow through to unit economics

How to Use

Tell the agent:

  • "Analyze my unit economics" — walks through full calculation
  • "My CAC is $X and monthly churn is Y%" — gets specific benchmarks
  • "Compare my SaaS unit economics to benchmarks" — industry comparison
  • "Model what happens if we cut churn by 3%" — scenario analysis
  • "Break down unit economics by customer segment" — segmentation

Required Inputs

Provide what you have (the agent will estimate what's missing):

Revenue side:

  • Average Revenue Per User (ARPU) — monthly or annual
  • Gross margin percentage
  • Monthly or annual churn rate
  • Expansion revenue rate (upsells, cross-sells)

Cost side:

  • Total sales & marketing spend (monthly/quarterly)
  • New customers acquired in same period
  • Customer success/support costs per account
  • Onboarding costs per customer

Formulas Reference

CAC = Total Sales & Marketing Spend / New Customers Acquired

LTV (Simple) = ARPU × Gross Margin% / Monthly Churn Rate

LTV (DCF) = Σ (Monthly Revenue × Gross Margin%) / (1 + Discount Rate)^month

LTV:CAC Ratio = LTV / CAC  [Target: >3:1]

Payback Period = CAC / (ARPU × Gross Margin%)  [months]

Contribution Margin = (Revenue - Variable Costs) / Revenue

Magic Number = Net New ARR / Prior Quarter S&M Spend  [Target: >0.75]

Burn Multiple = Net Burn / Net New ARR  [Target: <2x]

Red Flags Dashboard

SignalThresholdAction
LTV:CAC below 1:1Losing money on every customerStop acquiring, fix retention or pricing
LTV:CAC below 3:1Unsustainable at scaleReduce CAC or increase retention
Payback > 24 monthsCash flow riskAccelerate monetization or cut acquisition
Gross margin < 50%Service business, not softwareRe-examine delivery costs
Net retention < 100%Revenue shrinking without new salesFix product-market fit
CAC trending up > 15% QoQChannel saturationDiversify acquisition channels
Magic Number < 0.5Inefficient growth spendPause scaling, optimize

Output Format

The agent produces:

  • Executive Summary — 3-line verdict on business health
  • Metrics Table — all calculated values with industry benchmarks
  • Segment Breakdown — if data provided, per-segment P&L
  • Scenario Matrix — sensitivity analysis on key variables
  • Action Items — prioritized list of improvements with expected impact

Get the Full Context

This skill gives you the framework. For industry-specific unit economics benchmarks, valuation context, and implementation playbooks:

AI Agent Context Packs — $47 per industry. SaaS, Fintech, Healthcare, E-commerce, and 6 more.

AI Revenue Leak Calculator — Free. Find where your business is losing money.

Agent Setup Wizard — Free. Configure your AI agent in 5 minutes.

Bundles:

  • Pick 3 Packs — $97 (save $44)
  • All 10 Packs — $197 (save $273)
  • Everything Bundle — $247 (all packs + playbook + setup)