"I can hire out for editing, proofreading, formatting, and cover design, and those are fixed, sunk costs. Once those are paid, I can earn 70% on a self-pubbed ebook."
Sunk
"I can hire out for editing, proofreading, formatting, and cover design, and those are fixed, sunk costs. Once those are paid, I can earn 70% on a self-pubbed ebook."