Yes they are still around.I have a friend that has one.
Works great for him.Cost is around $300.
I haven't checked into any more,but will.
Don't know all the specifics of it.
Later
Vac
your friend cannot have a cable box that descrambles the signal, unless his cable system is from 10 years ago.
There are no cable boxes that can descramble the signal, reason being the cable system works on a back and forth sending of the signal and its easy for cable companies to foil any illegal cable boxes. Lets say you sign up for cable and you hook up a illegal box, that box wont even recieve the necessary signal to descamble the stations, unless you are actually paying for the channels.
Like i said your friend is bullshitting you or his cable company is in the dark ages.