the watches are a high end fast fashion brand in japan. it seems to be very lucrative
However, in Japan, their G-Shock brand (kind of lower cost, in the US), can get even more expensive than Oceanus. Some of them look like Pip-Boys (Because this is HN, I need to mention that this is a deliberate exaggeration).
Many of the folks I worked with, could afford good watches, and wore G-Shocks. They were quite proud of them.
I suspect you’ll see them on the Japanese Casio site.
There are collectible models that sell used higher than they were new, but for the most part they’re much cheaper
Then there are lines like MR-G. hand hammered metal cases made out of premium materials.
But even on my phone most chats don't trigger notifications. I just see them when I see them. Only the most important people can trigger them.
The MR-G models are priced in the thousands.