thx for sharing :loveliness: :loveliness: :loveliness:
I just bought one set from dangdang.com at 205CNY.
It's about 215HKD.
I have read set 1, they have good teaching. Hm... but I need to read it's hints at the back to clearly know the theme. The Chinese is not easy to read.
It's good for kids, for set 1, there are 3 books that has repeated sentence, which is good for kids to read by themselves.
215/(6*8)=$5.... per book.
However, it's paper cover.