Woot has 2-Pack Sonos Era 100 Wireless WiFi Bluetooth Speaker (Black or White) on sale for $409.99. Shipping is free w/ Amazon Prime or is otherwise a flat $6 per order.

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Product Details:

• Easily play all your audio content using Wi-Fi and Bluetooth
• Connect your turntable or other device using an auxiliary cable and the Sonos line-in adapter.
• With the press of a button, you and your family and friends can stream directly from a paired Bluetooth device.
• More powerful as a pair: Take the sound from room-filling to thrilling when you put two speakers in the same room. Get ready for an even wider stereo soundstage.