Cost

Resource	Charge
S3 storage (×2 with replica)	Per GB-month
S3 requests	Per 1k
Replication	PUTs + inter-Region data transfer
S3 gateway VPCE	$0 hourly
SSM interface endpoints	Hourly per AZ
Probe EC2	Instance + EBS while running

Tear down when you are done. demo.sh down deletes the lab VPCs, gateways, SSM endpoints, and probe instances it created.