Hi Kathy! Great question.

First off, you can afford print because it's POD (print on demand) which means Amazon (or wherever you upload) will create the books as they're ordered. "With print on demand, you don’t have to hold any stock, or even ship your items to your customers, the vendor you work with does all of that for you. Instead, you simply pay a fee for the item and shipping, and then charge your customer enough so you can still make a profit." (eCommerce site)

Second, I've written plenty about pre-marketing and author branding here and on my website badredheadmedia.com - I even just released a mini-book on branding!

Hope that helps x