I can't seem to find out how much one ticket is at here

It depends on when you go, Fridays and Saturdays are $10 in the evening, for example, whereas Wednesday and Thursday evenings are only $6. You can find the full hours and pricing on their website. Admittedly it's a bit of a challenge to navigate but there's the link to the hours at the top of the page, right under where it lists the address

Normally it's $10 for the entry. That includes skate rentals as well.