I like the UI, it's intuitive and straight forward.
The information and quality of search results seems to be so-so by my very non-scientific walk through.
Amazon is continuing to close the gap on local search and shopping. Imagine an integrated Amazon where in at a product page or category page on the Amazon store you can choose to buy right there on Amazon or find a merchant near you that sells the product. Of course Amazon would made some coin off the lead for the offline sale in a PPlead type model with the merchants.