The website has a weekend/holiday price for each ticket type I believe that would be what you're looking for.
On the website there should a phone number you can at the main office, they're there to answer all of your questions about Ski Roundtop. Then you can ask about weekend prices.
Either call them or go online to check daily prices.
It is like 73 dollars for 8 hours...
Thanks! Your answer is awaiting moderation.