I should get back onto Discord now and post this, in case any NaNo Madness writers are thinking of going this route (and I haven't read the reviews yet of IngramSpark; this is the first link I came across):
IngramSpark Review: Why I'll Never Use it Again - The Writer's ...
https://www.writerscookbook.com/ingram-spark-review/
Sep 3, 2018 - IngramSpark is a company similar to CreateSpace, only not owned by Amazon. They, like Lulu and others, help you bring your ebook/paperback self-published book to life. ... I’m not a fan of KDP Print—or Amazon, for that matter—so I wanted to go with IngramSpark.