(Image credit: Amazon) Amazon sells hundreds of millions of products and it can feel a bit overwhelming at times to try to find the best deal. Now that AI assistants like Claude , ChatGPT and Gemini are becoming more commonplace, Amazon has its own AI-powered shopping assistant, Rufus, which just got even more handy. Rufus can now show customers a full 365 days of price history for a product, including when it was available for a higher or lower price and when the last price change occurred. Before, customers could only see the available price history for the past 30 or 90 days, enough data to tell you if there'd been a recent sale but not enough to know whether a limited-time sales price is truly a great deal worth snapping up. This week's update expands that range to a year, offering a much broader baseline of data for customers to compare to.…