Elasticache Serverless: Which commands have how much charges?

Moving to elasticache serverless from elasticache is a big decision. I want to understand if I move to the elasticache serverless, how much cost the new setup will be.

But the ECPU calculation is a bit vague and harder to understand. documentation mentions that ECPU is based on both vCPU and KB transferred, and if a slow command is triggered then it will take more ECPU.

Could you please show examples where ECPU will be more than the data transferred and depends on the command type? i.e what is the pricing for GET, HGET, HGETALL etc,...

• for a HGETALL command, if the total data size is 100KB then how much ECPU will it consume?
  • 100KB with 100 keys in the Hash
  • 100KB with 1000 keys in the Hash
  • 100KB with 10000 keys in the Hash
  • 100KB with 100000 keys in the Hash
  • I don't need an exact figure for each, but trying to understand how to calculate total cost of elasticache vs elasticache serverless purely in terms of resources & usage.