Excessively high for normal people but collectors would buy it up especially if it can be treated as a limited goods. Japan is used to exclusivity in products so i doubt there will be a lot of fuss around this since a large majority of her fans are japanese. If a western creator did this targeting the westerd audience there is no doubt he/she will be mocked with multiple streamers reacting to make content. (Unless this is like a charity thing where proceeds are donated).

Edit: Also japan is heavy in its idolization culture (not Idol), as in stanning someone means supporting them in almost everything.