All4Cellular offers the AT&T Apple iPhone 4 / 4S USB Car Charger
, model no. 75367, for $4.95
with free shipping
. That's the lowest total price we could find by $3 and the best price we've seen for a new unit. (We last saw a refurb for $2 less in May.) Deal ends August 26.
Note that this item is new, but ships in bulk packaging.