I literally just search on Google “How do I find the price per s3 bucket” and the first link is this.

https://aws.amazon.com/premiumsupport/knowledge-center/s3-fi...

Why do people think that they can give Amazon a credit card number and expect everything to be easy enough for them and suitable for a large enterprise? AWS offers something for beginners - Lightsail. When that outgrows their needs, they can peer their behind the scenes LightSail VPC to a full fledge VPC.