E-Commerce Drop shipping Calc - Essential Tool for E-commerce Profitability The E-Commerce Drop Shipping Calculator (ECOM Calc) is a fundamental tool for understanding the viability of your e-commerce business plan. Before you start, use this app to get a detailed breakdown of all costs involved in running a successful e-commerce or drop shipping business. ECOM Calc is a must-have app for any e-commerce specialist responsible for designing and executing marketing strategies to promote products