Is this LEGO Ninjago book still popular among collectors?

Yes, as a 2017 Story Book from the Ninjago theme, it holds value for dedicated fans and collectors.

How many pieces are in the LEGO Ninjago: Book of Secrets set?

This specific set contains 7 pieces.

Name: LEGO Ninjago: Book of Secrets (9781405288026-1)
Brand: LEGO

Story Books

Story Books · 2017

Theme · Story BooksPieces · 7Set Number · 9781405288026-1Year · 2017

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Is this LEGO Ninjago book still popular among collectors?: Yes, as a 2017 Story Book from the Ninjago theme, it holds value for dedicated fans and collectors.
How many pieces are in the LEGO Ninjago: Book of Secrets set?: This specific set contains 7 pieces.
What year was the LEGO Ninjago: Book of Secrets released?: The set was released in 2017.