Youtellme.com VS Savelist

Price Snoop - When viewing a product on Amazon, Price Snoop will show you just how much it costs on the other...

Camelcamelcamel - Easily monitor Amazon product prices and get alerts when they drop.

Shoptimate - Use the Shoptimate extensions to compare the price without any click. When you browse an item on a online store, a bar shows up at the top to tell you if the exact same item can be found cheaper elsewhere. Including shipping costs

Fetchee - Fetchee is a free price tracking wish list app that works with all online stores worldwide.

Prisync - Prisync is a competitor price tracking and monitoring software for all sizes of e-commerce companies worldwide.

Keepa - Price history charts and the option to be alerted on price drops for all Amazon sites.