The price is set at $525 USD for Cine Designer, then $125 USD /year after.
It's priced in the same tier as a solo/indie license of a high end render engine like Redshift/Octane/Vray, which are all around $500 USD.
Half of the users are from the EU/Asia, so at some point in the transaction I would assume it does a local conversion.
I'll look into the website options, if it's possible to show the USD more clearly, but it does show the $ for me. Is that symbol used for NZD?
Are you paying with PayPal or Stripe?
I buy a good amount from UK PayPal sites like http://www.3dscanstore.com/
and I think it converts to US before you confirm.