Is there a method to figuring out how much a used Hermes Kelly/Birkin should cost? For example, what would you pay for a Kelly that's 15 years old, in good condition, but needs a visit to the Spa? What about a Birkin that's in the same shape? TIA!!
There's a rather handy post about this very subject that I saw recently but I can't think where. It was by member XiaoXiao - a search on her name should bring it up. It covered at least part of your question.