When it comes to pricing your erotica Kindle eBook, there are a few things you need to take into account. The first is what your competition is charging. Take a look at the top 100 erotica Kindle eBooks and see what prices they are selling at. You'll want to price your eBook somewhere in the ballpark of what the competition is charging.
The second thing to consider is the length of your eBook. The longer your eBook, the more you can charge for it. A good rule of thumb is to price your eBook at $0.99 for every 5,000 words. So, if your eBook is 20,000 words, you would charge $3.99 for it.
The third thing to consider is the quality of your eBook. If you have a well-written, professionally edited eBook, you can charge a bit more than if your eBook is more amateurish. A good rule of thumb is to add $0.50 to your price for every 10,000 words if your eBook is of professional quality.
Putting all of these factors together, you should be able to come up with a price for your eBook that is competitive and fair.