Ain't Seoul attractive to you?

There's only one book that I would say a helpful Seoul city guide. It's lonely planet Seoul City Guide.
They do have visually powerful photoes, easy-to-read layout and updated info.

Apparently there's another book I want to check for reference if I start to write travel guide,
Timeout city guide series http://www.timeout.com/shop/city-guides/?DCMP=OTC-allguides
Timeout guidebooks carry a fine collection of famous cities in the world such as Tokyo, Shanghai but no Seoul book.
It could be an opportunity for whom trying to publish Seoul guide book, but at the same time it's frustrating.
Why are books about Seoul so rare in English?!

Seriously, isn't Seoul attractive enough to urge people to visit?