2014 Chalet TS116RB -the ULTIMATE luxury TC ever??

Why are TCs so wildly expensive compared to other RVs?

I don't really know but here are some statistics. According to the RVIA (Recreational Vehicle Industry Assn) there are only about 10,000 truck campers built a year and one manufacturer accounts for almost half of them (Lance), and for every one truck camper built there are 17 travel trailers and about nine fifth wheels bulit. So in some ways it is economy of scale where fixed manufacturing costs cannot be spread across many units.