This is confusing. Here is someone with a FANTASTIC first outing of a book and he's whinging about it? The author raises $8K on Kickstarter, sells his book for $10, and is complaining that the 'gorilla' is taking a bigger percentage of the take? Using his numbers: of 73%/11%/12%/1% his money was $1117/$231/$333/$20 respectively. So he made three times as much money selling through Amazon as he did on the next closest…
A few notes. A high % of the KS money went into rewards (books printed averaged $20 shipped).
I did make 3x though Amazon, but if I had gone through gumroad, I would have done double the revenue.
Biggest tl;dr complaint is that as an avid reader of about a book a week I had no idea that authors paid both 30% of the total price plus the delivery fee. The other main competitors don't do this... just found it odd and wrote about it.