The Mighty jump starters are not available online any more, however, here are some great choices for you to pick a similar jumper pack at a low price.
the list of low price jumper packs with similar features to Mighty ones
faqs about mighty car jumper packs
Why are these not available online?
Their site does not specify anything. The only thing we know is you can’t find them online.
do these jump the car from the inside?
Yes. You need to plug these to the cigarette lighter adapter and jump your car from the inside.