Real-Time E-Commerce Price Tracker

I need a custom application that monitors my suppliers’ feeds in real time, captures every price or stock change, and pushes those changes instantly to my live listings on eBay, Amazon and a handful of smaller channels I also sell through. The goal is simple: the moment a supplier adjusts cost or availability, my own listings should mirror that shift automatically so I stay competitive and never sell what’s out of stock.

Core scope
• Pull product, price, and inventory data from multiple supplier APIs or data feeds.
• Map that data to my catalog and update the corresponding SKUs on eBay, Amazon, plus any additional channels we add later.
• Run continuously—no hourly or daily lag—so every update is reflected in real time.
• Include a straightforward rules engine where I can set mark-ups, minimum margins, or dynamic repricing strategies.
• Log each change in a dashboard and let me export reports for audit purposes.

Deliverable & acceptance
1. A working desktop or web app (your choice) that meets the points above, installed on my server or cloud instance.
2. Source code, clear setup instructions, and API credentials handled securely.
3. A brief hand-off session so I can maintain rules and add new suppliers or sales channels without further coding.

Preferred stack is flexible—if you have experience with Python, Node.js, or a similar robust environment for API integrations, let’s use what you’re fastest with—as long as it remains easy for another developer to pick up later.