Sale 1:

Sold for Stormy Storm Dragonborn Helmet (Mini at ~19.5 below) ~2 keys in pure/items

http://www.tf2outpost.com/trade/29479607 - B/O of 18

Seller: https://backpack.tf/profiles/76561198342161127#!/compare/1513728000/1513814400

Buyer: https://backpack.tf/profiles/76561198120877114#!/compare/1510358400/1514505600

Was pulled from marketplace before selling.

X = 18 (Capped by B/O)

Sale 2:

Sold for $34.99 on Marketplace.tf

https://marketplace.tf/items/30912;5;u56

https://backpack.tf/item/6260817566

34.99/1.95 = ~17.95

X = 18

Stormy Storm Dragonborn Helm Mini:

Sold for $38.85 and $37.74 on Marketplace.tf

https://marketplace.tf/items/517;5;u29

https://backpack.tf/item/1408515108

38.85/1.95 = ~20

37.74/1.95 = ~19

No current sellers.

Going with 18 flat.