I emailed him regarding the ESW10JPN. Unless he typoed on the USD vs SGD the price he is charging is not reasonable. I replied to his last email in regards to that and I hope he meant SGD instead of USD. At least we would be back down to a reasonable amount.
I got my pair with the HPP5 case for $527USD shipped from jithk btw. And I think most people paid <$600 USD for theirs. I would not expect prices to jump 70% in one month, even if they sold out.
I just got email confirmation from Wilson that the price was in fact USD, at least 75% more than what I paid with the case for just the headphones