Couple of issues here; sadly nothing can be done against any.

A couple of hats will likely be too high here. The antlers most definitely; Ive been monitoring a seller at 250 for a while and when I wanted to make my final comment, he relisted at 300. Other sales there bring me nothing either; all untracable, unusable (but undoubtedly lower) or sales for hats that cant be minied due to discrepant sales (or no sales).

The hwnn is also probably too high; that was already way too high when it was last updated (because the high end there is definitely an outlier, but eh, that got accepted so nothing much I can do). That has the same problem as the antlers; all new sales are untraceable, not directly usable but undoubtedly lower than current, and theres 1 high outlier sale (well above sellers Ive seen on that).

The bubble is actually a concern, its no surprise that the only other sale there is an upgrade for a hat that only has sales that are too low :P

The bonzo danger is too high; that was closed and requires to be fixed.

In general the problem is that the evidence lacks, is no longer present or is hard to solidify here. It is not unlikely that this is 100-200 keys too high, but the only fix we can actually apply here is the danger, and that change by itself will be roundable to an extent here. As such, I guess the sale can be reported as it is (with the notion that it is in all likeliness a fair bit too high).