Business Model Validation

Testing if you can acquire customers profitably and build a sustainable business, not just a cool product.

The Critical Question

You've validated:

• Problem exists ✓
• Your solution works ✓

Still need to prove:

• Can you acquire customers profitably?
• Will they pay enough?
• Can you retain them?
• Does the math work?

Many products die here. Cool solution, but can't make money.

Business Model Basics

Revenue Model Types

1. Direct Sales (B2B)

• Sell to businesses
• Higher prices ($1,000-100,000+)
• Longer sales cycles (1-12 months)
• More expensive to acquire
• Higher retention

2. Self-Serve (B2B/B2C)

• Customer signs up online
• Lower prices ($10-500/month)
• Quick sales cycle (minutes to days)
• Cheaper to acquire
• Lower retention

3. Freemium

• Free basic version
• Paid premium features
• Conversion: 2-5% typical
• High volume needed
• Viral growth important

4. Marketplace

• Connect buyers and sellers
• Take % of transaction (10-30%)
• Need both sides (chicken-egg problem)
• Network effects crucial
• Hard to start, powerful when working

5. Advertising

• Free for users
• Monetize attention
• Need massive scale (millions)
• Privacy concerns increasing
• Race to bottom on prices

6. Usage-Based

• Pay for what you use
• Examples: AWS, Twilio
• Scales with value
• Predictable for customer
• Requires metering

Choosing Your Model

Unit Economics

The most important math for your business.

Key Metrics

CAC (Customer Acquisition Cost) Total spent on acquisition / Number of customers

Example:

• Spent $5,000 on ads
• Got 50 customers
• CAC = $100

LTV (Lifetime Value) Average revenue per customer × Average lifespan

Example:

• $50/month subscription
• Customer stays 24 months
• LTV = $1,200

The Golden Rule: LTV should be 3x CAC or higher

Example results:

• LTV $1,200 / CAC $100 = 12x ✅ Excellent
• LTV $1,200 / CAC $400 = 3x ✅ Good
• LTV $1,200 / CAC $600 = 2x ⚠️ Risky
• LTV $1,200 / CAC $1,200 = 1x ❌ Failing

Calculating CAC

Include all acquisition costs:

• Advertising spend
• Sales team salaries
• Marketing tools
• Content creation
• Events/conferences
• Partner commissions

Formula: CAC = (Total marketing + sales costs) / New customers acquired

Example:

• Google Ads: $2,000
• Content writer: $1,000
• Sales rep: $5,000
• Tools: $500
• New customers: 40
• CAC = $8,500 / 40 = $212.50

Calculating LTV

Method 1: Simple (for subscriptions) LTV = ARPU × Average customer lifetime

• ARPU (Average Revenue Per User): $50/month
• Lifetime: 18 months
• LTV = $900

Method 2: Churn-based LTV = ARPU / Churn rate

• ARPU: $50/month
• Monthly churn: 5%
• LTV = $50 / 0.05 = $1,000

Method 3: Detailed LTV = (ARPU × Gross margin) / Churn rate

• ARPU: $50/month
• Gross margin: 80%
• Monthly churn: 5%
• LTV = ($50 × 0.8) / 0.05 = $800

Improving Unit Economics

Increase LTV:

• Raise prices
• Add upsells
• Reduce churn
• Increase usage
• Annual billing

Decrease CAC:

• Improve conversion rates
• Organic channels (SEO, content)
• Referral programs
• Community building
• Product-led growth

Pricing Validation

The Pricing Test

Don't ask: "How much would you pay?"

• People lie low
• Not realistic

Do ask: "At what price would you..."

• Definitely buy (too cheap = you're leaving money on table)
• Consider buying (sweet spot)
• Not buy (too expensive)

Example results from 50 people:

Sweet spot: $20-30 (where "definitely + consider" is highest while maximizing revenue)

The Van Westendorp Analysis

Four questions:

1. At what price is it too expensive?
2. At what price is it expensive but worth considering?
3. At what price is it a bargain?
4. At what price is it too cheap to trust?

Plot the curves. Optimal price is where "too expensive" and "too cheap" intersect.

Pricing Tiers

The "Good, Better, Best" approach:

Example: Project Management Tool

Rules:

• Middle tier should be obvious choice
• Price difference: 3-4x between tiers
• Most customers choose middle
• Top tier for power users

Common Pricing Mistakes

Customer Acquisition Channels

The Bullseye Framework

Test 19 channels. Find your 1-3 winners.

Channels to test:

Viral/Organic:

1. Viral growth
2. SEO (organic search)
3. Content marketing
4. Social media (organic)
5. Community building
6. PR

Paid: 7. Google Ads 8. Facebook/Instagram Ads 9. LinkedIn Ads 10. Display advertising 11. Sponsorships

Direct: 12. Sales team 13. Cold email 14. LinkedIn outreach 15. Partnerships 16. Affiliate programs

Platform: 17. App stores 18. Marketplaces (AWS, Shopify) 19. Integrations

Channel Validation Process

For each channel:

Week 1: Research

• Who uses this channel successfully?
• What does it cost?
• What's typical conversion?
• Do we have required assets?

Week 2: Small test

• Spend $500 or 10 hours
• Measure results
• Calculate CAC
• Assess quality of leads

Week 3: Decide

• Keep (CAC < 1/3 LTV)
• Iterate (promising but needs work)
• Kill (doesn't work)

Focus on channels where:

• CAC is profitable
• You have unique advantage
• You can scale

Channel-Specific Benchmarks

The Pre-Sale Test

Ultimate validation: Get them to pay before you build.

How to Pre-Sell

1. Define the offer

• What they get
• When they get it
• Price (often discounted)
• What's included

2. Create simple page

• Problem statement
• Your solution
• Social proof (if any)
• Call to action: "Reserve your spot"

3. Payment options

• Full payment (best validation)
• Deposit ($100-500)
• Letter of intent (weakest but still good)

4. Set success criteria

• $5,000 in sales = validated
• 50 deposits = validated
• 20 LOIs = maybe validated

The Pre-Sale Pitch

Template:

"We're building [solution] for [customer]. It will [benefit].

What you get:

• [Feature 1]
• [Feature 2]
• [Feature 3]

Timeline: Launching in [timeframe]

Early bird price: $X (regular price will be $Y)

Risk-free: Full refund if not satisfied.

Ready to be a founding customer?"

Pre-Sale Success Stories

Examples:

• Kickstarter: Entire business model is pre-sales
• Dropbox: Video got 75,000 signups
• Buffer: Landing page got 100+ signups in 1 week
• Superhuman: Waitlist of 150,000+ before launch

The power: Real money > expressed interest.

Churn and Retention

Why Retention Matters

Example: $100/month subscription

Scenario A: 10% monthly churn

• Month 1: 100 customers = $10,000
• Month 12: 28 customers = $2,800
• LTV: $1,000

Scenario B: 5% monthly churn

• Month 1: 100 customers = $10,000
• Month 12: 54 customers = $5,400
• LTV: $2,000

Halving churn doubled LTV.

Acceptable Churn Rates

If churn is too high, fix before scaling acquisition.

Measuring Retention

Cohort analysis:

Look for:

• Is retention improving over time?
• Where's the drop-off? (month 2, 6, 12?)
• Do certain segments retain better?

Improving Retention

Onboarding (critical first 7 days):

• Welcome email
• Setup checklist
• Quick wins
• Personal outreach

Engagement:

• Regular touchpoints
• New features
• Content/education
• Community

Preventing churn:

• Usage alerts
• Proactive support
• Win-back campaigns
• Cancel surveys

The Business Model Canvas

One-page business model:

Fill this out before building your full product.

Validation Checklist

Before launching:

• [ ] Tested pricing with 50+ people
• [ ] Identified optimal price point
• [ ] Calculated target CAC
• [ ] Calculated expected LTV
• [ ] LTV/CAC ratio is 3x or better
• [ ] Tested 5+ acquisition channels
• [ ] Found 1-2 profitable channels
• [ ] Achieved pre-sales or strong commitments
• [ ] Set up payment processing
• [ ] Defined success metrics
• [ ] Know your churn target
• [ ] Have retention plan
• [ ] Business model canvas completed
• [ ] Unit economics work on paper

Red Flags

Kill or pivot if:

🚩 Can't get to profitable CAC

• Tested 10+ channels
• All have CAC > LTV
• No path to profitability

🚩 Can't charge enough

• Market won't pay enough
• Value delivered too low
• Free alternatives exist

🚩 Churn is catastrophic

• 10% monthly churn

• Can't improve with effort
• Customer don't see value

🚩 Sales cycle too long

• 12+ months to close
• Need huge team
• Can't afford burn rate

Moving to MVP Testing

You now know:

• Your pricing
• Target CAC and LTV
• Acquisition channels
• Unit economics work
• Customers will pay

Next step: MVP Testing (Chapter 6)

• Build minimum viable product
• Launch to early customers
• Measure everything
• Iterate to product-market fit

Resources

Calculators:

• LTV/CAC calculator
• Churn calculator
• Pricing calculator

Books:

• Traction by Gabriel Weinberg
• The 1-Page Marketing Plan by Allan Dib
• Obviously Awesome by April Dunford

Tools:

• Stripe (payments)
• ProfitWell (SaaS metrics)
• ChartMogul (analytics)
• Baremetrics (metrics)