Do you really expect elderly pensioners to purchase and install their own digital set top boxes? Or do you just expect them to live without television further isolating them from society?
I'm not sure about the cost, perhaps it could be done cheaper, but I'm certain that many pensioners need assistance converting over to digital TV and they will probably need some training on how to use it as well.
it's three cords.
power in, antenna in, box out to telly.
not exactly rocket science.
but hey, they can't afford to eat so they might as well watch telly, huh?