Getting different pricing for a similar amount of requests on different days?

So on Aug 10 the total usage was 22.08, and there were 481 requests.

Just yesterday on Aug 20th, the total usage was 25.28 and there were 292 requests.

It seems the price per request has almost doubled in ten days,

does anyone know why this might be?

44 posts were merged into an existing topic: My pricing metrics make no sense? I seem to be getting charged double everyday?