Earlier quoted context omitted.
The difference between a fairly expensive ($300) RDS instance + EC2 in the same region vs a $90 dedicated server with a NVME drive and postgres in a container is absolutely insane.
A fair comparison would include the cost of the DBA who will be responsible for backups, updates, monitoring, security and access control. That’s what RDS is actually competing with.
RDS has a value. But for many teams the price paid for this value is ridiculously high when compared to other options.