Hi, I like to make web appliations as hobby. Currently I am working on an idea where a user can search for a product and the result will list and compare price of the product, collected from popular e-commerce site in my country. So basically this will be a table constisting of product name, date of publish, link to the product page and price. All together, this will be a price comparison site for the endusers.
I will not get any direct benefit for making this information available to the users. My idea of income from this site is by publishing advertisement.
My question is, is there any legal issue for collecting product price from e-com sites and make them available for the users for comparison? Any other suggestion from business perspective is also much appreciated.