The question wasn't about a PI in a data center was it? It was about how does this compare to a raspberry pi.

I'd even question whether or not the application needs to be in an "AWS-grade datacenter" since it does 1 query every 10 seconds but sure...

I'd be more than willing to bet hertzner's cheapest VPS (~$3.25?) would do over a million[1] requests per month pretty easily and they're inside a data center which is a pretty apples to apples comparison.

My point is that the cost per request is high, regardless of data center or not. That's a lot of money for such a low volume of requests.

[1] Which is still only a request like every 2 seconds.