Rules

Unless they’re been created by the character who uses them, Charms and the related Gadgets have a given Background cost per batch. Each batch is considered to begin with 10 Charms or Gadgets.

Because Charms and Gadgets are one-shot Wonders, the Background cost per batch is one-half of what it would be (rounded up) if the Charm or Gadget in question was a Wonder that could be used more than once. If, for example, Nix secures a batch of Dr. Hans von Roth’s Pan-Entropic Road-Vortex Collapse Modules (that is, little hand-held bombs that use Entropy 3 /Matter 2 to instantly collapse holes in asphalt or concrete), that 10-unit batch of Gadgets would cost Nix three points; a three-dot Wonder would normally cost 6 points; halved, that’s three points. When that batch is exhausted, the points are spent. In order to get a new batch, then, Nix’s player must spend three more experience points in order to score a new batch of Dr. von Roth’s Gadgets.

Yes, this sort of thing can get expensive; considering, though, that such items are one-shot magickal Effects that anyone can use, however, it’s not unreasonable to keep them costly and somewhat rare.