All4Cellular via eBay offers the refurbished AT&T Zero USB Travel Charger Kit for iPhone / iPod touch 2-Pack for $4.99 with free shipping ($2.50/charger). That's $17 below the lowest total price we could find for two new units with cables. (For further comparison, we saw one of these refurbished chargers for $2 less last week, since expired.) These chargers include a charge/sync cable compatible with Apple iPhones, iPads, and most iPods (see "compatibility" under "Technical Specifications" on the product page). Offer ends April 25 at 3:09 pm ET.

Note: No warranty information is provided.