Amazon offers the Energizer Value Charger, model no. CHVCMWB-4, bundled with four AA rechargeable batteries for $13.08. Add it to your cart via Subscribe & Save to drop it to $11.12 with free shipping. That's the lowest total price we could find by a buck, though we saw it for a buck less in October. This kit can charge AAA and AA batteries.

Be sure to cancel Subscribe & Save after your order arrives or you'll be billed for subsequent shipments.