A4C offers the refurbished AT&T Apple iPhone 4 / 4S USB Car Charger 2-Pack, model no. 75367, for $3.95 with free shipping. That's a buck below our February mention of a 2-pack and the lowest total price we've seen. (It's a current low for this quantity by $13.) For further comparison, we saw a single charger for $2.49 last month. Deal ends July 25.

Note: A 90-day A4C warranty applies.