I got this from Deb's website: Adults $24.99; Children 3-9 $13.99; Under 3 Free.
You pay the one price, and it is "all you can eat." It's like a buffet, but they bring everything to your table to share. And, you can ask for more.
It's been a long time since we've been there (before they had Lilo and Stitch), but we loved it. And now that they have Lilo and Stitch, I bet it's even better! I wouldn't hesitate to have another character breakfast at O'Hana.