Why BE CAREFUL? Da Revain sells the same item for both $400 and $600. The product in the Lego store is $400, so don't make the mistake of buying a more expensive one. I got this to do a couples project with my wife; an exercise in mutual self-control and teamwork to see if we can get through this without divorce; So far, so good. I had never made Lego before and was very impressed. Directions are excellent; clear, precise and correct. Pieces are stored in separate packages for small projects/components and not delivered in a huge jumble of useless heaps like some 3D puzzles. Only one of the 6020 pieces was missing, which was immediately replaced free of charge by calling Lego. (Customer service was also excellent.) The castle itself is beautiful, wonderfully designed, and a work of art. There are many small details (moving stairs, Dumbuldor's office, Basilisk's vault, etc.) that reference the books and films and show an excellent knowledge of these sources. All in all a lot of fun with a great product from a good company.
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