That's NEVER been the case!
CW, I'll answer the three posts together, with some answers being the text from the Amazon websites I gave you the links to. They set out these rules, however, you may be lucky until someone reports seeing a better price on another site.
From the Price Requirements Page: Please Note: The 70% royalty option applies only to purchases of qualifying Digital Books by customers in certain territories. For sales to customers in Brazil, Japan, Mexico, and India, Digital Books must also be enrolled in KDP Select to be eligible for the 70% royalty option. See the Pricing Page for more information about the Available Sales Territories.
Note it insists you have to be in KDP Select to get the 70% in some countries.
From the Pricing Page 70% Royalty option: Available Territories:
f you choose this Royalty option for your Digital Book, it will apply to sales of your Digital Book to customers in the following Available Sales Territories:
Isle of Man
Your Royalty on sales to customers outside the Available Sales Territories will be as provided under the 35% Royalty Option (i.e., at the 35% Royalty Rate calculated as indicated for that Royalty option).
Hundreds of countries in the world, but only 28 you can get the 70% in - minus the delivery costs as well.
Matching Price Competitor: By "price-match" we mean where we sell the Digital Book in one or more of the Available Sales Territories at a price (net of taxes) that is below the List Price to match a third party's sales price for any digital or physical edition of the Digital Book, or to match our sales price for any physical edition of the Digital Book, in any one of the Available Sales Territories.
The Amazon main terms say they will set the price - end of story. They've proven that with dropping the price of the couple of books I test sales through them a couple of years ago. They lowered the price twice without a request or telling me they were doing it.
Amazon limits where you can get the 70%, and sets out they will price match. If they haven't hit you yet, you're lucky. But in the past authors had posted in the old forum about being told they had to pull the book from the free sources if they want to post at Amazon for anything but free.
Lulu pays 80% for the sales from the Lulu site, and I do well there with no work beyond putting it on the site.
You complain about the Title rules - I proved they're related to the Partnership sales enforced on Lulu by either Apple, Amazon, or B&N. If I put a print book up for sale via Lulu only the title rules don't apply. But if I change that to sell through the Partnership the title rules kick in and I have to abide by them. That makes it clear those rules are externally required. For some unknown reason all e-books lodge at Lulu go through the system as if they're in the Partnership.
The one e-book book I had for money sale through Amazon in recent years has sales records of the book being sold by them, then a refund drawn against that sale when the book was returned to Amazon within 2 weeks. That, and the second drop in price caused me to withdraw the book from sale by Amazon, but they still have it on their website.
Also, two older books which were before I authorised any books for sale on Amazon are still showing on the Amazon website, but as currently unavailable - why they don't just pull them after a few years is beyond me. All requests to Amazon to have them removed go unanswered.
At this point in time, and for over 2 years, the only books I have approved for sale outside of Lulu to be on Amazon, Apple etc are those I give away free.
I've never said you can't sell through Amazon, but have said you should be aware of the rules Amazon imposes before you try to sell through them. However, when I state their words on how they operate, don't tell me I'm wrong about it - tell them.