A4C offers the AT&T Zero USB Wall Charger, model no. 75787, for $2.95 with free shipping. That's the lowest total price we could find by $1, although we saw it for slightly less over a year ago. It's compatible with any USB charging cable. Deal ends March 9.
Before you send in your tax return, double-check that you haven't made one of these mistakes that can trigger IRS scrutiny.