Amazon offers the Duracell Powerpack 600 Jump Starter / Emergency Power Source
, model no. DPP-600HD, for $119.95
with free shipping
. That's the lowest total price we could find by $26, although we saw it for $2 less in February (since expired). It features three 3-pronged AC outlets (480-watt continuous / 600-watt peak), DC outlet, built-in 600-watt power inverter, 5-watt flashlight, overload / over-temperature protection, jump starter, built-in AM/FM radio, digital alarm clock, and more.