Its original price is $62.5, now more than 50% off. I think it is good entertainment to take a bath in the hot spring in winter.
The following description is copied from the promotion page.
Purchase as many as you like! No limits.
SuperSale voucher gains entry for up to 2 adults & 3 children (3-15 years old).
Online promotion only.
Vouchers are on sale until 4 pm Monday 17th June, unless sold out prior.
Valid for entry from Tuesday 4th June through and including Sunday 21st July.
Access to other rides or services is not included.