These have been the limited-time houses not part of a festival:
- Princely Dawnlight Palace (May 10-21, 2018): 14,000 / 17,500 crowns
- The Erstwhile Sanctuary (March 8-12, 2018): 13,000 / 16,250 crowns
- Pariah's Pinnacle (December 7, 2017-January 2, 2018): 13,000 / 16,250 crowns
- Linchal Grand Manor (September 14-18, 2017): 14,000 / 17,500 crowns
- Tel Galen Tower (June 15-19, 2017): 8,000 / 10,000 crowns
- Grand Topal Hideaway (April 27-May 1, 2017): 15,000 / 18,800 crowns
It's been over a year, and we have not seen the return of the first exclusive house, Grand Topal Hideaway, for sale. Nor have we heard mention of the second house, Tel Galen Tower, returning, and its one-year anniversary occurs in just a few days. The same can be said of limited-time mounts.
Here are some theories as to why. Please add yours, if you have any insight to share.
1. By strictly adhering to one-time offers, ZOS can make more money off such deals. When they announce a one-time offer in the future, more people will buy it because they know that ZOS will not re-offer the item, even after a year has passed.
2. ZOS makes more money overall by just introducing new houses (or mounts) for purchase. When a new home is offered, no one owns it yet. If an old home is re-offered, however, some people already own the home, so the revenue from the re-offering will be much less than the revenue from the new home. Sure, ZOS could re-offer old homes alongside new homes, but then these "exclusive" homes seem more and more like run-of-the-mill commodities, and some people might just stop buying the exclusive homes altogether. This also ties in with #1 above.
3. The one-time items can be used as rare-chance prizes in special events or in other revenue-producing activities. Mounts have been "re-offered" in crown crates, and some exclusive homes were offered - with a very very rare chance and there have been really no confirmed winnings were reported on the forums - in that random dungeon special event last fall.