CEO stopped me mid-pitch: "Skip the tech stuff. Show me the money." Here's the napkin math that closed $35k/month in savings
So I pulled out this napkin math that closed the deal in 5 minutes: THEIR CURRENT INVOICE PROCESSING: Staff: - 3 full-time data entry people - $35/hour × 8 hours × 22 days = $6,160/month each - Total salary cost: $18,480/month Errors: - Manual error rate: 3% - 6,000 invoices/month × 3% = 180 errors - Cost per error (corrections, credits, relationships): $50 - Error cost: $9,000/month Speed: - Current: 3-day processing backlog - Late payment penalties: $3,000/month - Lost early payment discounts: $5,000/month Total monthly burn: $35,480 MY PROPOSED AUTOMATION: One-time setup: $2,500 Monthly maintenance: $500 Tool costs (n8n + PDF Vector): $99/month Processing time: 30 minutes daily oversight Error rate: 0.3% (18 errors vs 180) Same-day processing (capture all early discounts) Their monthly cost with automation: $599 Their monthly savings: $34,881 ROI payback period: 2.1 days THE CEO's RESPONSE: "Why the f*** haven't we done this already?" *Signed contract on the spot* THE ACTUAL BUILD: - Gmail → PDF extraction → Validation → QuickBooks - Built in n8n in 4 hours - Been running for 7 months - They've processed 42,000 invoices - Total downtime: 47 minutes They tried to give me a bonus last month because the savings were "embarrassing their previous decisions." The lesson: Nobody cares about your nodes. They care about their numbers. What's the biggest monthly saving you've delivered? Drop the actual numbers 📊