A magic kit was a type of magic prop, and magicians could use magic to add special effects to an ordinary kit. Prices varied with the different effects and materials used.
Prices increased when the enchantment power was stronger, more lasting, and applied to a smaller kit… There were clear principles.
Ryder had lent one to Shawn the ogre wrister that could steadily and significantly enhance the user's power. Plus, as it was a tiny wrister that only took up a little space, its price had increased massively. It was very likely that the magician who had created it would have upgraded it further into a high-level magic kit if they hadn't been limited by the materials and size.