Why is Swatch's co-branded Neptune expensive?

The starting area is limited and there is full moon certification. According to the inquiry, Swatch official website shows.

1, the launch area of swatch and Neptune is limited to London, Milan, Zurich and Tokyo, and the China market is not open for sale yet.

2. Swatch co-brand Neptune has a MoonSwatch mobile Altman moon watch with full moon certification. This time, the second hand is made of gold-plated MOOMSHINE alloy patented by Omega. Therefore, Swatch's co-branded Neptune is expensive.