While the capsules are cheaper than the Creatine Capsules from ON mentioned above, you are required to consume 6 of them in a day as compared to 4 ON capsules.
Of all the substances mentioned above, Creatine is the most popular because of how effective it is as well as its price, which is relatively cheaperthan that of other supplements for the same purpose.
There are many creatine supplements out there but don't skimp and get a bottle full of mystery powder, go for the good stuff as creatine is already cheaperthan many supplements.