40. The product summary generator of claim 39 , wherein said alternative product is selected by said alternative product selection module based on at least one of a predetermined near-price margin, a predetermined near-rank margin, and a predetermined severity differential threshold.
49. The product summary generator of claim 40 , wherein said alternative product is selected by said alternative product selection module by identifying a candidate alternative product which: is priced lower than said specific product; is within a predetermined near-rank margin for said key attribute; and is from the same manufacturer as said specific product.