Shop Guru takes a description of what you are looking for and does the research: searching Amazon, Best Buy, Walmart, Target and others, reading reviews, specifications and prices, then ranking the options with a match score and a value rating. A browser extension puts it alongside the shopping itself.
Showing a match score and a value rating separately is the sensible part. Those are two different questions, whether a product does what you need and whether it is worth the money, and every retailer’s own ranking collapses them into one order that is optimised for the retailer rather than for you.
No pricing appears anywhere on the site, so the business model is unclear, which matters more than usual for a shopping recommender: something has to pay for it, and affiliate revenue would sit directly against the ranking. Review data from retail sites carries its own manipulation problem, and coverage stops at the retailers it searches.
