Discourse Dropbox Google Drive Backup

The Amazon S3 backup is really awesome but not budget friendly.
I am a perfect example of Noob and I want to save money.
Is there any way to implement Dropbox Backup for Discourse or Google Drive Backup ?

Any Plugin or through SSH?

Yes, you can copy the backup files via ssh/rsync.

 /var/discourse/shared/standalone backups

Also backblaze has a cheaper S3 offering.