hhgregg offers a pair of Polk Audio 5.25" 2-Way Bookshelf Speakers, model no. T15BPR, for $49.98 with free shipping. (Several other stores are matching, including Amazon and Best Buy.) That's the lowest total price we could find by $17. It features 3/4" silk dome tweeters, 5-1/4" composite drivers, and a front-firing bass port.