My book is free on Kindle?

I published my book on Amazon and I set the price to $5.99. It’s showing that it’s $0 on Kindle. If someone who has self published with Amazon can explain to me why my book is free when I put a price on it. I don’t use Kindle, nor do I know how it works. TIA

I published my book on Amazon and I set the price to $5.99. It’s showing that it’s $0 on Kindle. If someone who has self published with Amazon can explain to me why my book is free when I put a price on it. I don’t use Kindle, nor do I know how it works. TIA