The line "gently used and very good condition" suggests to me that it is most likely original, but as the Raleigh Parliament wasn't a high end model, most of the original components won't be very interesting or useful. Unless you run a museum, of course.
For me, the only relevant question would be: is it a nice frame, in a size I can use? If so, it would be worth something to me. Lower end frames can actually make very nice bikes with the right components.