Polk via eBay offers a refurbished pair of Polk Audio 2-Way RTi Bookshelf Speakers in Cherry for $279.99. Checkout with PayPal and apply coupon code "PSUMMER20" to cut that to $229.99. With free shipping, that's $170 under the lowest price we could find for it new. They feature a frequency response of 40Hz to 27kHz and 6-layer DAHLI enclosure. Deal ends June 20.

A 2-year Polk warranty applies. Also, this coupon can only be used once per PayPal account within a single transaction.