Microsoft has rolled out a pilot feature in Microsoft Edge where Cortana can help you find the best price for a product you’re interested in buying.
Right now, this feature supports 14 retailers, which includes Amazon, Walmart, and eBay in the US. Microsoft will increase the availability and the number of retailers supports in the months ahead, so stay tuned for more updates.
The feature works similar to current Cortana features where you see Cortana display notification in the address bar if there’s helpful information available for the site you’re on. When you visit the site of a supported retailer, Cortana will alert you that there are other options available at a lower price for the same product.
Once you click on the Cortana icon, the information will be displayed in the right pane within the same window.