I had 2 fantasy books on Amazon and Smashwords since 2011-12. I didn't pay much attention to them but without any advertising effort I did sell some occasionally on Amazon (none on SW).
Then in Fall 2016 I decided to finally try KDP Select. I removed it from SW (useless as it was)
Then, no sales. I did a free giveaway. Nothing.
After 6 months I decided to put it back the old way. No sales since then at Amazon.
Wondering how I went from an occasional random sale to zero.
I figure maybe I was lucky to be in a particular queue where it was getting random eyeballs on a fluke, unless I screwed up when re-listing it. But it says it is LIVE and I don't see any markets removed from the availability list .
Any suggestions or thoughts? Looks like I should not have joined KDP Select.
The bookshelf page says the prices are 2.99 but Amazon US has them listed at 2.35 and 2.41.
There are many variables but my guess would be the haystack is much larger now, maybe 3 or 4 times as big or more. That means any search for your key words has an abundance of competition. No one can buy it if they can't find it.
Traffic. Traffic. Traffic.
Anything that helps direct traffic to your book leads to sales. Anything that diverts traffic is a negative.
Maybe try to tweak your keywords and categories. Try to narrow the focus to zoom in so your potential buyers can find it.
As George says, it's gotten harder and harder for any book to be noticed, with something like 6 million ebooks on Amazon, including all new releases by the big traditional publishing houses.
If you're outside the US, don't worry about the price you see on the .com site. The bots are showing you some weird combination of your own local price and the exchange rate. The price you set is the price American buyers will see and pay.