This is basically a very well known classical gadget which is also very well known as being very challenging, applying the use of your mind. This actual product is of a very nice and high quality unlike many other cheap ones which are available these days and break very easily. However, this is a very high quality item, which is the actual 'Rubik's' branded one and therefore lasts a very long time.
Furtheremore, I also enjoy playing on this very much too. It took some time to begin with, to get used to completing this- but then I managed to complete it quite a few times and it's a great gadget for when you are bored or want to challenge yourself.
Overall, I'd say that the actual quality of the product is very high if you are interested in buying one, however, compared to all the latest gadgets these days it can seem to be a bit boring for some people- but definately a great entertainer to begin with - It's so great that it's known as a classic and still being sold in many places even though it was released decades ago (that shows how good, fun and challenging it is).
Anyway, with play.com offering this at such an affordable price, what more can you ask for? It's GREAT!