Considering how insanely popular the Eastern Togi was, they really have little incentive to lower prices. Bear in mind, it remained the most popular item on the Mogstation for months, beating even Fantasias. I hazard a guess they would make decidedly less selling it half off for a single character or at its current price for an account wide version. Hence why they don't.
Furthermore, these Chinese Exclusives are handled by a third party company who likely also has influence on pricing given how the Chinese market operates. Personally, I'm only interested in the mount, though I may wait for a sale.