Isuru wrote:How does the interior look?
It has been my experience that POD does covers just as well as most other printing efforts, but the interiors could be hit or miss, especially color interiors.
That is a good question Isuru. I have previously bought PoD books (via Lulu and CreateSpace) with colour covers and black and white interiors.
My copy of Midgard Campaign Setting is a full colour book printed by Lightning Source UK (people buying it in the USA or elsewhere might have it supplied by another branch of Lightning Source or another company). I've put up an
album of pictures on my Faceborg account. Here are some direct links to the pictures:

The front of the book says "Second printing - 2013" but this white page (one of two white sheets added to the back of the book) shows this is a Print on Demand book from Lightning Source UK.
That might have some sort of impact for "collectors" but I'm more interested in the content than the resale value.
This is a close up photo and is a bit blury. You can see the quality of my photograpy. The actual text is small and crisp.

This is the back cover.

This picture shows the "wibble" on the pages away from the spine.
I've got my copy of Midgard Campaign Setting between my Makander and Oathbound campaign settings, so the book might flatten out over time. The wibble does not stop me reading the book, but it might annoy a perfectionist.
(I think the wibble may be caused by the pages being full colour pictures, with the ink distorting the paper. But I'm no expert.)

Pages 14 and 15, showing a map of Midgard.
Note that the pages are printed dark (the true colour of the paper can be seen on the Lightning Source pages at the page of the book - my first photo).
The Northlands (at the top of the page) are actually lighter than the page colour.

"The Seven Regions of Midgard" - a typical sidebar on page 17.
Note that the chapter number is lighter than the background of the page, as the entire page is printed dark.

Two colour illustrations on pages 26 and 27.
Note that the brown background makes you feel they are printed on dark paper, but it is an optical illusion. These are white pages with full colour printing.

The Centaurs illustration, on page 32 is one of the few illustrations with a white background. (This shows how dark the pages are.)

The start of Chapter 4 (pages 74 and 75) showing a light illustration opposite the darker page.

Two pages about The Grand Duchy of Dorning, showing a light illustration and a map with light elements on the darker pages.
I took all those pictures at night with poor lighting, but I think you can get a general idea that the book quality is pretty much the same as a non-PoD book.