Amazon is offering the Rubik’s Professor Cube 5 x 5 for just $18.48, originally priced at $29.95. It’s “a must-have for the true Rubik’s aficionado and is the most complex of all Rubik’s Cube levels.” Product page.

Its siblings and predecessors bow down to the challenge this one introduces to the user. Newly tooled and released, this is a long awaited puzzle for Rubik’s fans looking for a piece of nostalgia and those who have just learned how fun Rubik’s products can be.

[via Amazon]