I've played the Dark Souls series extensively but not this one- as such I spent a lot of time on the wiki. I also started out with a more formal register before rewriting it to be more in tune with a Gothic 19th century feel, after I had sifted through some dialogue dumps on YouTube.
The artist makes a small mistake here - blood echos is only valuable for hunter or monster. Normally, Yharnam citizens use money as exchange currency. For better info, please read coin's description Bloodborne game.