DISCLAIMER: This breakdown is only done to the best of my abilities, I cannot guarantee any running costs at all.
- DynamoDB:
- 25 Read Capacity Units for free
- 25 Write Capacity Units for free
- Point In Time Recovery: $0.23772 per GB-month (can comment out in template.yaml)
- KMS Key:
- $1 per key generated (can comment out in template.yaml)
- Gets 20,000 requests free per month
- Lambda:
- 1 million free requests a month
- Up to 3.2 million seconds of free compute time per month (37 days worth of runtime)
- SNS:
- 1 million free requests a month
My personal experience so far has been costs of £1 to £1.10 a month, your mileage may vary.