It turns out that weilding the Buster sword isn’t very easy. However, on the plus side, if you can swing it then the weight alone will do damage to anything you manage to hit with it.
Which would you rather enter melee combat with? This sword of a knife? For the purposes of this question assume we’re just talking about the sword and not its ability to be equipped with magical gems that summon arse-kicking monster minions.
The sword’s for sale too. Turns out that after going to all that effort to make it… they’d rather have the cash than find somewhere to store and/or display their creation.