CFA end of chapter readings vs QBank

In terms of difficulty, which do you think is closer to the real test? I just did every end of chapter question for FSA in the CFA curriculum and did much better than I have been doing on the QBank. Don’t know if I should feel good about that or if these questions are just meant to solidify the concepts after you are finished a reading. I know the Mock is the closest to the real thing but I am saving them for the last week. There are only two full mocks available right?

only one

One full mock from CFAI divided into morning and afternoon sessions.

I thought there was a free one and one that you could buy. Is that incorrect?