[Not another shrubbery]

Originally Posted by Kelly Pedersen

Gadgets, however, are not supposed to be items that are easily acquired on the open market. Gadget works alright if there are only a tiny number of enchanters in the world, but if there's anything like the large number that GURPS Magic, or D&D, tends to assume, then magical items will be available for sale, and thus not eligible for Gadget limitations.

I'm having trouble understanding this objection... Could you explain why it matters if other, similar items are for sale?