4surpluscity via eBay offers the refurbished Fitbit Charge Wireless Activity and Sleep Tracker in Black, model no. FB404BKS, for $34.99 with free shipping. That's $5 under last week's refurb mention and $5 under the lowest price we could find for a refurb elsewhere today. It tracks your daily activity and sleep patterns to help you attain your fitness goals and features an OLED display showing caller ID and fitness stats. It's available in size S only.
No warranty information is provided.