I live about 75 miles from the factory and have taken a tour of the plant. Like someone else said they are a custom unit, the price is how you have it built. They build very few TT, and none before there ordered.
They do build a quality unit. If price is more important then quality there are other units made at a much lower cost.
Same can be said about motorhomes The maple cabinets in a Newell are 44,000 dollar option. You can buy 2 cheep trailers for that.
If I had the budget I would own one.
Forks RV also has custom high end TT units as well. While not a TT DRV and Excel build high quality units as well.