It is pretty expensive...we were lucky and had a coupon from the Mass Pass book as well as free passes from our rec department. Admission is $18 per person and 2 and under is free. But dinner cost us $62 for the five of us and then another $24 for fried dough later!
Edaville is open weekdays from 4-9pm and weekends from 2-9. There are coupons available on their website. Coupons available if you are a fan on facebook and there's two for one admission coupons in the Entertainment book and the Mass Pass book.
We go every year and never miss it!