Stormy 13th Hour Familiar Fez

New price: 48-57 keys

[proof below]

SALE #1 = invalid

https://backpack.tf/profiles/76561198138577355#!/compare/1498867200/1498953600

https://backpack.tf/profiles/76561198139171368#!/compare/1498867200/1498953600

http://www.tf2outpost.com/trade/29254187 - B/O 80 keys

Sold for an Arcana Backbiter’s Billycock (100) Outlier. Would’ve been capped at 80 keys though.

SALE #2 = 57 keys

https://backpack.tf/profiles/76561198050930436#!/compare/1501718400/1501804800

Sold for a Green Energy Safe ‘n’ Sound (55) + 2 keys. Credits to Mindacos and Theo.

SALE #3 = 48 keys

https://backpack.tf/profiles/76561198139171368#!/compare/1501632000/1501718400

Sold for a H.O.U.W.A.R. (47) + 1 key in sweets = 48 keys.

SUMMARY

Sales: 48 / 57 keys

Sellers: 70 keys

http://i.imgur.com/7ZLpHN7.png

Going with 48-57 keys.