Retrevo.com presents a unique take on gadget comparison shopping. By spidering a veritable avalanche of shopping comparison sites, they compile a near-comprehensive snapshot of just about every gadget they can, including feature sets, average reviews and price points. They plot these into neat regression charts that outline a given gadgets “value” as determined by its number of features plotted against its price. They’re also able to sort things into cost points like “high end”, “mid range” and “budget” and make comparisons based on these facts. Since their spider is constantly compiling and recompiling new data points, they’re able to recategorize a given gadget as its prices change and as more reviews become available.