Polk Audio via eBay takes up to 85% off its factory-refurbished Polk Audio equipment, with prices starting from $29.99. Plus, all items bag free shipping. Depending on item type, a 6-month to 2-year Polk Audio warranty applies. Deal ends August 17. A couple of best bets, with comparisons against buying new:

Refurb Polk Audio RC65i 2-Way In-Wall Loudspeakers for $89.99 (low by $60)

refurb Polk Audio SurroundBar 5000 IHT Bluetooth Soundbar and Subwoofer for $199.99 (pictured, low by $60, most $300+)