What are the pros and cons of submitting books to Lulu as a PDF?
The advantage of producing your own PDF for publication is that it gives you an extra measure of control over how your book will ultimately look. You can use fonts that are not on the Lulu list and you can be sure that your formatting is adhered to. The disadvantage is that the Lulu printer is especially finicky about printing certain PDFs which means that making a PDF that complies with the standards of the Lulu printer has been problematic for some authors.