$9 for 100 products. $50+ for 1,000 products. That's what most Shopify app store inventory sync apps charge. So I built my own. Last week, I shipped a custom inventory sync system using Node.js, Axios, and Shopify's GraphQL API (mutations + queries). Here's what it does 👇 → Syncs inventory between 2 Shopify stores → One-directional OR bidirectional (toggle in .env) → Optional: auto-restocks inventory when an order is cancelled → Works for 100 products or 100,000+ pricing doesn't change → Host it locally via ngrok (zero monthly cost) → Or host it online for $5–10/month flat That last one matters more than people think. Some clients don't just care about cost. They care about security. They don't want their inventory data sitting inside a third-party app subscription. This solves both. Why I built it as a product, not just a one-off: I keep seeing clients stuck between two bad options: Pay $50+/month for an app that scales pricing with their catalog Build it from scratch (expensive + slow) There's a third option — productized custom automation. You get the flexibility of custom code without the agency-level price tag. This is what being a Shopify consultant in 2026 looks like. Not just building stores. Building solutions to problems Shopify apps don't solve well. What's a recurring app cost you'd replace with something custom if you could? #Shopify #ShopifyDevelopment #ShopifyExperts #ShopifyConsultant #ShopifyDevelopers #Ecommerce #EcommerceGrowth #DTC #ShopifyAPI #NodeJS #InventoryManagement #Automation