How much does ordinal inscription cost?

Could you please elaborate on the concept of "ordinal inscription" and its relevance to cryptocurrency or finance? Is it a specific service offered by a blockchain platform or a cost associated with a particular transaction type? Without a clear context, it's difficult to provide an accurate answer to the question "How much does ordinal inscription cost?" as the term itself isn't widely recognized in the cryptocurrency or finance industries. Could you provide more details or clarify the context in which you're asking this question?