Very useful list, 100s of names across many different cultures. Since buying all my woes around naming npcs (both on the fly and during prep) are gone.
The only stumbling block might be if you want fantasy names for fantasy races, you'll have to pick a real world set of names that match your expectations of how those names should sound (not a big deal though once you've explored the book).
In short, well worth the money to never struggle to name an npc again (including when people ask you for names on the spot).
[5 of 5 Stars!]