The best alternatives to Cross are Amazon Assistant, Awardo, and CheaperThan. If these 3 options don't work for you, we've listed a few more alternatives below.
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We search for the best price for the things you buy online, so you don’t have to. CHEAPERTHAN is a FREE Chrome Extension which searches 1000's of websites as you look at products on Amazon. If we find it cheaper we will discreetly tell you.
Price Tracker is a command-line tool for monitoring the prices of products Features Tracking prices and availability of products. Tracking Amazon Kindle books. Displaying products information in a terminal. Exporting data into Excel and YAML files.