# Gift-a-Roast — Cost Analysis & Pricing

## Per-Call Cost Breakdown (2-minute roast call, outbound)

| Layer | Service | Unit Cost | Call Usage | Subtotal |
|---|---|---|---|---|
| **Twilio call** | Programmable Voice (outbound) | $0.014/min | 2 min | **$0.028** |
| **Twilio Studio** | Flow execution | $0.0025/flat | 1x | **$0.003** |
| **STT** | OpenAI Whisper | $0.006/min | 30s speech | **$0.003** |
| **LLM** | deepseek-v4-pro (admin-ai) | ~$2-4/1M tokens | 500 tokens | **$0.002** |
| **TTS (voice)** | Azure Neural | $12/1M chars (~1,500 chars/resp) | 30s speech | **$0.005** |
| **TTS (voice)** | Resemble.ai (alt) | $0.0005/sec | 30s | $0.015 |
| **Total (voice only)** | | | | **~$0.04** |

## Song Mode Add-on

| Layer | Service | Unit Cost | Usage | Subtotal |
|---|---|---|---|---|
| Song generation | Suno API (3rd party) | $0.06/request | 1 song | **$0.06** |
| **Total (with song)** | | | | **~$0.10** |

## Inbound Call Scenario (customer calls the roast line)

Same AI costs but Twilio inbound rate: $0.0085/min → $0.017 per call → **~$0.03 total (voice only)**

## Monthly Fixed Costs

| Item | Cost |
|---|---|
| Twilio local number | $1.15/mo |
| Twilio toll-free number (optional) | ~$2.00/mo |
| Server (Core, shares existing) | $0 (marginal) |
| **Total fixed** | **~$3/month** |

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## Pricing Recommendation

Standard SaaS margins: 3-5x cost. This is a novelty product with viral potential — higher margins justified.

| Tier | Cost | Price | Margin |
|---|---|---|---|
| **Basic Roast** | $0.04 | **$2.99** | 74x |
| **Roast + Song** | $0.10 | **$4.99** | 50x |
| **Premium (custom dialect + song)** | $0.10 | **$6.99** | 70x |
| **Gift-a-Roast (send to friend)** | $0.04 | **$3.99** | 100x |

At these prices, even low volume (50 calls/mo) covers costs + Stripe fees. Viral adoption at 1,000+ calls/mo = $3,000-7,000 revenue vs $40-100 in API costs.

## Notes

- **Resemble.ai vs Azure TTS:** Azure is cheaper ($0.005/call) but Resemble's voice agents ($0.001/sec) might have better regional accent quality. Test both.
- **Suno API:** No official public API confirmed. The $0.06/request is from third-party reverse-engineered APIs. Risky for production. LLM lyrics + TTS singing is the fallback.
- **Stripe fees:** ~2.9% + $0.30 per transaction. At $2.99, that's ~$0.39/call in fees.
- **Legal:** Needs Terms of Service with opt-out mechanism. Anti-harassment safeguards (can't call the same number more than once without consent).