Self publishing (which I did) means you don't nearly need as much sales to make writing a book financially viable. If you self-publish through Amazon you get 40

Self publishing (which I did) means you don't nearly need as much sales to make writing a book financially viable. If you self-publish through Amazon you get 40%+ royalties, and selling 10k books would net six figures. With a publisher (as Keppmann writes), you really need 5-10x as many sales for it to be a success.