Re-suggestion, thanks to Hugh, K1NG and Foamy for the info!

Sale 1:

https://i.gyazo.com/a5222a421cfc84a811c7477039dcd761.png

Credits to Hande380 for the screen shot.

Sold for 85 keys pure.

Sale 2:

https://backpack.tf/profiles/76561198281862232#!/compare/1521504000/1521590400

Sold for 75 pure.

Sale 3:

https://backpack.tf/profiles/76561198013245606#!/compare/1522022400/1522281600

https://backpack.tf/profiles/76561198055847835#!/compare/1521936000/1522108800

Sold with ST Oblooterated for Burning Cowl(117.5) (no proof keys were part of trade)

Obloot Mini:

https://marketplace.tf/items/1120;5;u3006

Sales at 19.99, 27, & 30 USD, keys at 1.98, 1.97, 1.97 respectively.

Totals are 10.09, 13.7, 15.22 respectively.

Taking 14 - 15 keys, average of 14.5 keys.

Total is 117.5 - 14.5 = 103 keys

Total sales @:

75, 85, 114.5

Foamy's Part:

I would go with a full range here. If 75 took that long, I don't see why it should be treated as an outlier here. Especially since 75 and 85 are far closer to ecah other than 100 is compared to any of those sales.

To complicate this further:

the cowl will be resuggested, so the data point at 100 will change. Normally, that would end up becoming an outlier, but I'd get the issue of this being priced close to buy orders if that'd happen.

At this point I'd wait what happens to the cowl and then either leave it unpriced or give it a giant range

Taking 75 - 103 keys.