Office Depot and OfficeMax offers the JBL Clip+ Splashproof Bluetooth Speaker in Teal for $19.49 with free shipping. That's less than a buck over our March refurb mention (this one's new) and the lowest price we've seen for a new unit. (It's the best deal for any color today by $22.) It features a 160Hz to 20kHz frequency response, speakerphone function, 3.5mm auxiliary port, built-in rechargeable Li-ion battery with up to five hours of playtime per charge, and built-in carabiner.
Note: It's also available in Black for $22.01 with free shipping.