Future buying patterns - Idea!

Effective buying will be the theme of the future. Like we have gasbuddy (cheap gas) other widgets on web that give you the best way to find cheap products. In future we will have a site to help you with this. You register the products you want to buy and the location you are at (may be gps will find that). Once you specify what products you want to buy & when you want to buy website will help you to deliver the cheapest store to buy the same and also tell you how you can combine your purchases and best route to take from one store to the other.