strategy-os: Skill for Claude Code

Economics Calculation

Calculate unit economics with range-based estimates, integrated cost structure, and scenario analysis. Every input carries tier label; output inherits highest (weakest) tier. Merged from old str-calculating-economics and str-structuring-costs.

Procedure

Step 1: Gather Inputs with Tier Labels [S]

Read: pricing inputs (from stg-designing-pricing), market sizing (from stg-sizing-markets), competitive data (from stg-analyzing-competition), solution design (growth architecture).

Assemble input table:

Input	Source	Tier	Value
ARPU	Pricing tiers	T2 (hypothesis)	{range}
Gross margin	Category benchmark, adjusted for COGS	T2	{range}
Churn rate	Benchmark for category + ACV range	T2 (no customer data)	{range}
S&M spend	Channel strategy (stg-designing-channels) or cost structure estimate	T2	{range}
Growth model	Solution design	T1 (a choice, not a prediction)	{model}

Produce: input table with tier labels and source citations.

If channel strategy outputs are available (from stg-designing-channels), use per-channel CAC estimates and investment splits as the primary source for S&M spend and blended CAC inputs. This provides more rigorous CAC decomposition than freestanding S&M estimation.

Gate: inputs_gathered: bool -- all 5 inputs have values, tier labels, and sources.

• Pass: Step 2.
• Fail: For missing inputs, use category benchmarks with T2 label. If no benchmarks available, use SaaS median with T3 label and wide range.

Step 2: Calculate Core Metrics as Ranges [S]

Calculate for optimistic, base, and pessimistic input sets:

LTV = ARPU x Gross Margin x (1 / Monthly Churn Rate)

CAC = (S&M Spend + Allocated Overhead) / New Customers Acquired

LTV:CAC = LTV / CAC

Payback = CAC / (ARPU x Gross Margin)

Output tier = max(input tiers). If any input is T3, output is T3. If all inputs are T2, output is T2.

Produce: metric ranges across three scenarios.