$10 for one prompt is about right.
I would copy and paste entire json string examples or entire NIP text into the promt to teach it about a new and proposed NIP. You can also post the naddr if it's a custom NIP like from nostrhub.io or you can create an MD file and paste the proposed NIP into that and tell Dork to read from custom-nip.md for example. As you know new line breaks don't work so if I'm using Dork I would create a file manually.