Although I don't have 9900 coins yet, but I'm just curious. I'm thinking of getting the Big O Notebook when I have enough coins in my account, but I've no idea if its really worth buying.

Has anyone already bought it? If yes, can you please post some pictures and give an idea how it looks like? how many pages it has? something about the big o charts?

I couldn't find any information regarding the same on the internet.