Didn't say anyone should actually buy it? I only stated the obvious about the item for sale: cheap to produce, free marketing due absurdity (also, have seen this item discussed elsewhere), and a high return on investment since it's pretty expensive for a piece of brass.
Nowhere did I say that you should actually buy it, or that it's even reasonable to do so.
And yes, I can 100% justify a company selling it, it's a free market, doesn't hurt anyone, why not try?
I can't give you a single argument to buy it however.