The diversity of the universe is infinite. The definition of infinite is: "anything you can possibly think of and one more thing". And so it stands to reason that an infinite amount of people can obtain an infinite variety of objects from this infinite, or even an infinite number of them for an infinite amount of cash. Inversely, an infinite amount of space requires an infinite population to populate it, and so infinite divided by infinite equals one. Meaning in absolutely any finite given area in the universe, there is one inhabitant and one object.
But say! That one inhabitant can purchase that one object for only one NS dollar, and so perserve the nature of the universe from paradoxial harm!
That being said, the money-minded state of Galaxic Hitchhikers has opened a store to take advantage of the infinite nature of the universe. As our simple mathematical proof indicates, one person may at any one time buy one object for one NS dollar. Unfortunately, there is an improbabilty formula that indicates that our array of items will not be infinite. Indeed, it's highly probable that we can only offer our super-advanced-multi-headed-rotating-swivel-push-polisher toothbrush.
We would also say that we would offer this deal for an infinite time, but more concrete evidence seems to indicate that unlike its other dimensions, the lifespan of the universe is not infinite, so we can only offer our deal for a finite amount of time. (But look! One can divide a finite amount an infinite number of times, so in a sense the universe, and time, is infinite!)
So, for an (in)finite time, we will offer 1 super-advanced-multi-headed-rotating-swivel-push-polisher toothbrush for 1 NS dollar. However, keep in mind that this deal is only available for one person per object, so we will take it at your word that each toothbrush you buy is intended for one person only.
Besides, it's incredibly bad hygiene to share your toothbrush, and it's bloody uncomfortable to put multiple toothbrushes in your mouth at once.
