[Skoob]

They're probably going for the larger scale in an attempt to squeeze profit. That would be my guess. They don't expect to make as much selling a smaller version. There might be other reasons: 1:1 scale, the handle would probably be too flimsy. They'd have to make it separately out of molded plastic and then attach it to the foam block, e.g,. by threading the end. And the handle would have to be textured and detailed and dry-brushed to avoid looking rinky-dink cheap. All of these things add cost.

...But think of the difference in DEMAND! For a display prop that I can use to whack my friends over the head, I would consider a half decent reasonably-priced 1:1 version a MUST HAVE.