I have some hobby projects that are very infrequently accessed by me and my friends andy family. Relative to their usefulness, $10/mo would be way too expensive. With S3 and lambdas, my aws bill has been more like $1 to $3, depending on traffic and amount of active side projects.

Edit: those don't include a propoer DB, though, I have been basically using S3 as the DB. Not sure how much a RDS instance or something would add to the bill.