Have you ever seen pieces like Lieopolt the Black, Theodore Bruckner, Irillyth, Sevrin Loth, etc.? Those pieces (particularly the newer, warhammer forge pieces) completely outstrip anything Privateer has to offer. Easily. And all of those pieces are less than $50 a piece.
If you want to look at some larger pieces that clock in at ~$100:
Exalted Vermin Lord
Elspeth von Draken
Basilisk
Carmine Dragon
Khorne Daemon Prince & Herald, etc...
All of which you can use in a normal game without having to adopt special rules.
Perhaps you have a precedence with PP models that I simply haven't seen, but I personally think my $$ would be better spent, aesthetically speaking, on a FW model.