eBay has the Harman Kardon HKTS 15 5.1 Home Theater Speaker System for $150 with free shipping. Retail price: $649. Features 35Hz - 20kHz frequency response (-6dB), 8 ohm nominal impedence, 86dB at 1W,10" woofer, center channel has dual 3" drivers.
eBay has the Podspeakers Bluetooth Active Speakers Pair (White) for $399 with free shipping. List price: $699. Features class D amplifier, 4" Kevlar cone woofers, 0.75" silk dome tweeters, includes wall brackets and aluminum spike stands.
Amazon has the Meidong QQChocolate Portable Bluetooth Speaker (QQ4) for $27 - $10 off with coupon 3U66SCDX at final checkout = $17 with free shipping. Retail price: $60. Has excellent Amazon Reviews.