JBL offers its refurbished JBL Flip 3 Bluetooth Wireless Speaker in several colors (Black pictured) for $49.95. Coupon code "FLIPNOW" cuts it to $39.95. With free shipping, that's tied with our May mention and the best price we've seen for it in any condition. (It's also a low now by $29.) It features a 3,000mAh rechargeable Li-ion battery, waterproof casing, and up 10 hours of playtime per charge.
Note: A 1-year JBL warranty applies.