I don't know if I should discuss this but no the kit doesn't cost as much as a real N. inermis (at least, not as much as I paid for mine). The possible larger production pieces will cost more than this one due to their far size and extra appendages which all must be molded as seperate pieces.
Yes, Flip side is right, it would cost much more than a real plant to produce an entire vine of 4-6 pitchers in various stages of growth and decay, 8-10 leaves and the stalk in life size 1:1 scale due to the amount of molds which would need to be created.
A fake "full plant" could be created by the kit builder with a trip to the craft store for wire filled green plastic vine of a couple different diameters and wire filled lanceolate silk leaves. Or better yet, wire filled latex phalenopsis orchid leaves which are more expensive but are rubbery and can be cut into almost any Nepenthes leaf shape.
.... this is an indication of the perils of living with a woman who fills the house with silk plants I guess!