Logitech offers its "dented box" Logitech Z110 Stereo Speakers, model no. 980-000507, for $11.49. Add two to your cart for $22.98, then apply coupon code "logi_z110_1512" to cut them to $15.98. With free shipping, that's $7.99 each and the lowest total price we could find for two sets by $8. They're USB-powered and feature 3.5mm input. Deal ends January 8.

Of note, this is a dented box item; while the packaging may be dented or scratched, the product itself is new with a full Logitech warranty.