What changed

Vendors change their terms and we sometimes get one wrong. Both are recorded here, newest first, and labelled so you can tell them apart. Every entry is dated the day we observed it, names the value before and after, and links the vendor page that shows the new one.

Everything below dates from the first verification pass, when this site's data was being built and re-read row by row. That is why the list is all our own corrections and no vendor changes: it records a day of checking our own work, not a year of vendors moving the goalposts. From here on the list grows one observation at a time, and a vendor change will be labelled as theirs.