Fastest and slowest selling pick ups

What would make this data even more interesting and meaningful to anyone concerned about the bottom line, would be to have the variation and not just the average. I would be more concerned if I have a vehicle sell in 6 days and the next sells in 120 days and I have huge variation.

I like their stipulation that they limit fast sellers to a certain volume number but for the slow sellers they aren't limited by that volume.