DropBox

https://www.dropbox.com/
https://www.dropbox.com/individual/plans-comparison
- Plus US$11/mo, 2TB
- Though I am only using like 45GB of my potential 2TB, and I expect many others would use similarly low amounts of their available storage.
- 45GB could cost between $0.5625 to $1.035 per month on AWS S3.. so works out quite a bit cheaper.
- You would need to store ~478GB or more before Dropbox works out as the cheaper option..

AWS S3

https://aws.amazon.com/s3/
https://aws.amazon.com/s3/pricing/
- S3 Standard
- First 50 TB / Month | $0.023 per GB
- S3 Intelligent - Tiering * - Automatic cost savings for data with unknown or changing access patterns
- Frequent Access Tier, First 50 TB / Month | $0.023 per GB
- Infrequent Access Tier, All Storage / Month | $0.0125 per GB
- Monitoring and Automation, All Storage / Month | $0.0025 per 1,000 objects
https://aws.amazon.com/about-aws/whats-new/2018/11/s3-intelligent-tiering/
- S3 Intelligent-Tiering is a new Amazon S3 storage class designed for customers who want to optimize storage costs automatically when data access patterns change, without performance impact or operational overhead. S3 Intelligent-Tiering is the first cloud object storage class that delivers automatic cost savings by moving data between two access tiers — frequent access and infrequent access — when access patterns change, and is ideal for data with unknown or changing access patterns.