Amazon DocumentDB costs are broken into:

Several factors can impact your AWS DocumentDB costs:

AWS DocumentDB uses a pay-as-you-go pricing model, where you only pay for the resources you use. The pricing structure consists of two main components:

If your I/O charges exceed 25% of your total DocumentDB bill, switching to I/O-Optimized can offer up to 40% cost savings . 3. Strategies to Reduce Your Bill

| Instance | vCPU | RAM (GB) | Price/hour | Price/month (730h) | |----------|------|----------|------------|--------------------| | db.r5.large | 2 | 16 | $0.208 | ~$152 | | db.r5.xlarge | 4 | 32 | $0.416 | ~$304 | | db.r5.2xlarge | 8 | 64 | $0.832 | ~$607 | | db.r5.4xlarge | 16 | 128 | $1.664 | ~$1,215 | | db.r5.12xlarge | 48 | 384 | $4.992 | ~$3,644 |