Pricing strategy for open search serverless

Question

I came across these pricing links and we want to prototype based on the open search serverless.

https://aws.amazon.com/blogs/big-data/amazon-opensearch-serverless-is-now-generally-available/

But I didn't understand the pricing strategy for open search serverless.
Do we have any sample calculation ?
Do we know what might be very minimal pricing for a month ?

I did sample calculation based on the link below.

https://aws.amazon.com/opensearch-service/pricing/

OpenSearch Compute Unit (OCU) - Indexing	 $0.24 per OCU per hour
OpenSearch Compute Unit (OCU) - Search and Query	$0.24 per OCU per hour
Managed Storage	 $0.024 per GB per month

There are 2 compute units need for both indexing and search/query. 
Active & Standby for indexing and 2 Replicas for search & Query.
Totally there are 4 compute units.

0.24 * 24 (hours) * 30 (days) * 4 (compute units) = $691.2

This cost seems very high for minimal configuation.

Can someone provide some clarity on this pricing model ?

Accepted Answer

That pricing calculation looks accurate, though do remember that you will also be subject to storage charges for storage in S3 at the OpenSearch Serverless rates, so I'd almost certainly round that up to $700, to give you an idea of base usage costs. Remember that you also may need to take into account bandwidth charges also, for transfer into and out of the collection - there are no intra collection charges as far as I'm aware - that's all rolled up as part of the OCU+storage pricing charges. I presume the reason for this pricing model is that the target customer is not someone with not a lot of data/load, who would be just fine with a small conventional cluster.

Pricing strategy for open search serverless

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