Sony Store offers the Sony Stereo Bluetooth Speaker
, model no. SRS-BTD70, for $49.98
with free shipping
. That's the lowest total price we could find by $28, although most places charge $99 or more. Sales tax is added where applicable. It features two compact speakers and one subwoofer. It requires AC power or three AA batteries, which will supply up to 13 hours of operation.
Update: It's temporarily out of stock but will ship when available.