Amazon offers the Infinity Primus P163 Bookshelf Speaker in Black, model no. P163BK, for $59.99 with free shipping. That's the lowest total price we could find by $26, although we saw it for $10 less last month. It features a 49Hz to 20kHz frequency response, 6-1/2" low-frequency driver, and 3/4" high-frequency driver.