Yes, that's right. There are still expressions which I just don't understand.
The word "dear" has usually a different meaning to me, when I tried to translate it, I got an expression I just didn't understand, with "dear" meaning something into the direction of "something close to the heart", like beloved family members or close friends. I never had the idea to use this expression in combination with money ... or with "costs" in any way in general.
I never read many fantasy novels in general, but curiously, the rareness of spell components - or even spell components and the search for them - is never described in fantasy novels. even although they do exist - and some of them are indeed rare ( see (A)D&D , or Ultima.)
I think, it would bbe a nice idea to write a story about finding spell components, and nothing but that. I mean, it would be like a Tavern simulator : Something that was never described in novels, how keeping and managing a tavern actually works - and now, for several few years now, we have Tavern simulators !