Before you renew
Vendor scorecards
A changelog tells you that a price moved. This tells you what the vendor is like: how often it raises a published price, how big a typical increase is, and how big the largest one has been. That is the part of a renewal conversation you can prepare for.
How these numbers are worked out
Every recorded change in the archive is counted, ungrouped — a vendor that repriced forty meters on one day really did move forty published prices, and collapsing them would score a broad repricing the same as a single one. Suspected listing corrections are excluded — a placeholder price becoming a real one is not an increase, and counting it would rank whoever publishes the most placeholders worst. Rates are per observed year over the span actually in the archive, never extrapolated from a shorter one; where the span is too short for a rate to mean anything, the cell says so instead of printing a number. Typical increase is the median, with the mean beside it, because these distributions have long tails.
Every vendor we track
One page each: every service, every plan and every published list price we hold, with the changes recorded against them.
Vendor scorecards
How often each vendor raises a published price, and by how much
Nothing has been recorded yet. A scorecard is an average over observed changes, so it appears once the archive has some.
A scorecard is a summary of what is already on the changes page, so every figure here can be traced back to the dated rows it came from. Nothing on this page is a forecast.