http://www.tf2outpost.com/trade/16624326

Desert Maurader price is 9 months old, not the strongest piece of evidence.

That should be updated first I believe.

Sale #1 (Low end):

Buds were 17 - 17.5 keys at the time, making 21 keys ~1.2

Total Sale: ~2.2

Sale #2 (High end):

TF Logo Marauder price is 9 months old, invalid proof

Even if we use it as proof, original price is 1.5 - 1.9, ~1.5 after overpay

Total Sale (IF valid, it's not): ~2.5

Circling Heart Trippler's Tricorne original price is 2 - 2.3, ~1.9 after overpay

Considering your high end is based on 1 sale when most of it is a 9 months old priced hat, I wouldn't say it's exactly acceptable

Even if it was acceptable, both of your sales are a bit off (2.2 instead of 2.3 and 2.5 instead of 2.7)

And for last, your unproved sale is actually below your low end

Your quicksell link is indeed a quicksell though

Anyways your range cannot be 2.3 - 2.7

As indicated, the logo marauder needs to be priced first since it has an ancient price. And the tricorne would be 2 after overpay.

You do have the 2.2 pure sale. If you provide proof of the tricorne sale, a range of 2-2.2 may be reasonable. Or you can price the marauder first and base a range around that and the pure sale. As is, insufficient evidence for the high end.