postgresql-paas
azure
https://azure.microsoft.com/ja-jp/services/postgresql/
最小で約3000円
amazon rds
https://aws.amazon.com/jp/rds/postgresql/
最小約15$
digitalocean
https://www.digitalocean.com/products/managed-databases-postgresql/
最小15$
google cloudsql
https://cloud.google.com/sql?hl=ja
最小約10$
ElephantSQL
https://www.elephantsql.com/
5$
PostgreSQL Cluster
https://www.pgsclusters.com/
5$
scriptcase.host
https://scriptcase.host/postgresql-host
3.5$
Compose
https://www.compose.com/pricing#postgresql
$17.50
Clever Cloud
https://www.clever-cloud.com/
4.5E