Question about profits from Amazon

Hello,

I’m not sure if this post is allowed here (I’m sorry if it isn’t, if it’s not, I’d really appreciate advice on where to post it)

I’m considering selling a PDF-version of a book (a kid’s book, about 30 pages) on Amazon. I did some research and saw that the sum that Amazon takes from sellers can vary depending on many things, so I was wondering if any of you has any experience with this, do you know how much from the profits Amazon would usually take in a case like mine? (With and without the option to print)

Thank you all so much in advance!