> I use AWS EC2 for Waitlist's backend python webserver, RDS for the postgres database, S3 for file storage, and an Elastic IP. I use T2 and T3 instances. My AWS bill would be $200-300 a month
My guess is that RDS is eating up the cost here?
I've been using Litestream on datasciencesouth.com - it has flaws but if you can get away with it, it's much cheaper than RDS.