3D Titanic Puzzle

I bought this Titanic puzzle for my son. He started building the base only, and became too busy to finish it. I have put all the pieces back in their spots. As you can see in the photo. Only one tiny little piece is missing, piece 120 (see photo), but it does not look like a very important piece. Everything else is in 100% new condition. Every piece has a number on the piece and beside it, and instructions are very easy to follow. The LED lights, have a battery in them and do work as you can see in the photo. Asking $50, OBO.