All of these puzzles are well made. My children love them. This one is pretty easy compared to others. It only took my 12 year old an hour and twenty minutes to do.
My grandson really liked the Bepuzzled Oringinal 3D Crystal Puzzle
I wish you had more then what i seen and larger ones like more pieces, if you have a cataloge with your 3D puzzles i would love to get one, cause i have 6 grandsons and as they grow i know they will want them too. i would buy them any time