Harman Kardon offers the factory-refurbished JBL OnBeat Micro Speaker Dock with Lightning Connector in Black, model no. JBLOBMICBLKAM, for $15 with free shipping. That's $5 below our mention of a new one from a fortnight ago and the lowest total price we've seen for this dock. (It's also currently $25 under the cost of a new one.) It features a 110Hz to 20kHz frequency response, dock charger, USB for compatibility with other devices, and two full-range transducers. It's designed for use with the iPhone 5, 5c, 5s, 5th-generation iPod touch, and 7th-generation iPod nano. A 1-year Harman Kardon warranty applies.
If you're at least 62 years old, you can score a $10 lifetime pass to America's federal parks and recreational lands. But act quickly because fees are about to jump.