Startup Idea: Glass Price Feed Tracking System

Startup idea to develop a dedicated feed tracking system for glass artists. Users should be able to track prices of glass products on multiple sites, receive alerts on best deals, and reminders to reorder when certain inventory runs low.

It would be great if I had a feed tracking system that could keep up with prices of glass sites. I am a glass artist and there are multiple sites that send eletters or fliers with sales but I want a database that will update the products I am following not just something like google feed. And do an alert with my best deals and keep track when my inventory on certain glass is low and alert me to reorder.