Kmart offers the Logitech X100 Mobile Bluetooth Speaker in Red, model no. 984-000389, or Green, model no. 984-000373, for $10. Even better, Shop Your Way Rewards members earn around $3.90 in SYWR points. (Not a member? It's free to join.) Opt for in-store pickup to avoid the $4.99 shipping charge. Assuming you'll use the credit, that's $8 under our May mention and the lowest price we've seen. (It's the best deal now by $12.) It features an integrated microphone, on-board controls, auxiliary input, and wireless range up to 30 feet.
Of note, Shop Your Way Rewards members will earn a Kmart credit with this purchase and may be eligible for additional credits and discounts.