@Jack Slater Most writers have websites, but selling from your website is an added layer of complication! Two big drawbacks to selling from your own website that I see are a) you have to be really good at customer relations including answering all inquiries, questions, and nastygrams without losing your cool, and b) handling all the inevitable returns and refunds graciously. There's also the shipping issue. This is a lot of hassle. As @Stephen King said, most writers send inquiries to Amazon. If you're asking this because you want to maximize your royalties per book, I think that's why we all are here. Your royalty with traditional publishing is usually 10%-15% of the selling price--less if you're a new author without a proven sales record (after all, those big publishers are in business to make money😁); your print run will be quite a bit smaller if you're a new author--maybe 3000 books IF you show promise (tiny compared to mega-authors). With trad publishing, the author wears only one hat--that of Author, whereas the publishing house has a cadre of employees to wear all the other hats. But publishing houses (even the smaller ones) relieve the author of all* the nitty-gritty tasks associated with what should happen after the author types "The End"--publishing the book. *"All" depends on whether you're an established author (read: makes a lot of money for the publisher) or a newbie; it can include professional editing, book and cover design, marketing, and so forth. On the other hand, self-publishing with Amazon KDP can get you royalties of 35%-70%, depending on selling price and depending on how you specify the book is made: e-book, paperback, hardback, and/or audio. As self-publisher, you wear all the hats at one time or another. After you type "The End," you have to contract for professional editing (and this is necessary no matter how good you may think you are as a writer--similar to the lawyer who represents himself in court, the client has a fool for an attorney), book design (romance books have a different design and feel from, say, mysteries or self-help books or cookbooks), your cover design (a professional designer understands typography, appropriate imagery, layout, color psychology, and so on), how to position a book in the marketplace, brick-and-mortar storefront bookstore sales (some will handle self-published books, but some won't), library sales (most self-published books don't find their way to libraries), printing and assembling the book, storing the unsold books (how big is your living room, garage, or spare bedroom?), handling book returns (oh yes--there will be returns!), advertising--not just to the public but also to the book trade. and probably other things I've forgotten (such as your acquiring editor shepherding your book through the plethora of meetings within the publishing house before the powers-that-be give the green light to putting the book on the publishing schedule).