link The "Out of Stock" Nightmare
Revenue Lost
It's not just the lost sale. It's the lost Lifetime Value (LTV). That customer is now buying from your competitor.
Overselling
Selling inventory you don't physically have leads to chargebacks, bad reviews, and banned ad accounts.
link Just-In-Time Automation
Big logistics companies use ERPs like NetSuite ($50k/yr). We are going to build a Real-Time Inventory Tracker in Google Sheets for $0.
link 1. The Master Inventory Sheet
Structure is everything. We need to calculate Days of Stock Remaining to know when to panic.
| SKU | Product | Stock Level | Burn Rate | Status |
|---|---|---|---|---|
| TSH-BLK-L | Basic Tee (Black) | 450 | 12 / day | OK |
| HDY-GRY-M | Cozy Hoodie (Grey) | 15 | 5 / day | CRITICAL |
link 2. The Trigger Logic
In Column F ("Status"), we use logic to determine if we need to ping the team.
Translation: If current stock is less than 7 days of sales, trigger a reorder.
link 3. The Supply Chain Alert
This alert goes directly to your Logistics Channel in Slack or Telegram. It includes the SKU and the supplier link.
link Automate or Die
In E-commerce, stockouts are the silent killer. You can't scale ads if you can't fulfill orders.
By automating this loop, you remove human error. The sheet watches the warehouse so you can watch the marketing dashboard.