For clarity are you in Vic or another state? They are all different. The Victoria government comparison site is accurate to within about 5 days although not perfect all the time.
It retrieves or tells you how to retrieve your actual electricity use which I do not find ‘lengthy’ and my routine checks are usually a few minutes including a sanity check against my own trailing spreadsheets as well as a verification the top offer I want to go with is current and available.
Some of the differences between states is discussed in this other topic, especially the last handful of posts.
