If you are self-publishing a book your right to edit your book, when to print your book is with you in short you have total control over time and creation. 

You can self-publish, and make it how you desire with the help of expert and professional self publishing companies. You are also able to ensure that your book goes out of printing and is according to the marketplace’s needs. 

By comparison, publishers frequently cease printing books that aren't bestsellers, after which writers must wait for years to get their contracts and get back the rights of the books. 

Having total control over the whole publishing process and the life span of your publication is possibly the best advantage of self-publishing through a self-publishing company.

Writers assert that traditional publishers can create larger print runs compared to self-publishers. That is accurate. The tiniest conventional publishers will often do a print run at the low tens of thousands, even though a self-published author who must cover the whole manufacturing himself may find it troublesome to print over 500 or even 1,000 copies. 

A massive print run is your weakest argument for remaining with conventional publishing, because when the book sells well, the cash from the gain from the very first small print run may be utilized to cover the third and second and bigger ones.

Marketing: Traditional publishers do less and expecting writers to do more advertising for their novels. Unless a book is regarded as a possible bestseller, and several are, small cash is going to be spent on advertisements. But vice versa is not true for self-publishing companies who spend more on marketing the book.