Automated Excel Inventory Tracker

I need a clean, easy-to-use Excel workbook that will act as the single source of truth for my inventory. The core sheet should update stock levels automatically whenever I add new purchase or sales data,... (Budget: ₹1500 - ₹12500 INR, Jobs: Data Management, Data Processing, Excel, Excel Macros, Excel VBA, Inventory Management, Visual Basic, Visual Basic for Apps)