Unfortunately it's a little useless at the moment.
With prices changing as quickly as they have been (on SS machines) 90 months average is WAY too long and totally useless.
The only useful data is YTD, but at the moment there are not enough sales to go by with most machines only recording about 1-3 sales YTD. When they get to 6 or more YTD sales recorded then you have some useful information.