Bought for 12 keys.

https://backpack.tf/profiles/76561198046353418#!/compare/1602806400/1603152000

https://backpack.tf/profiles/76561198092554004#!/compare/1603152000/1603238400

Bought for 13 keys

https://backpack.tf/profiles/76561199084818714#!/compare/1603670400/1604188800

https://backpack.tf/profiles/76561198880178504#!/compare/1603929600/1604102400

Bought for 11 keys + 1 key sweets

https://backpack.tf/profiles/76561198138674450#!/compare/1603324800/1603411200

https://backpack.tf/profiles/76561198547989910#!/compare/1603411200/1603497600

Marketplace.tf sales

https://marketplace.tf/items/tf2/30930;5;u35

Last two sold for $25 (~13.8 keys) and 23.49 (~13 keys) [old]

Sold for smoking thirst blood + 1.5

https://backpack.tf/profiles/76561198547989910#!/compare/1603929600/1604102400

Sold for peace sign Zapateador + 1.5 keys.

https://backpack.tf/profiles/76561198024818411#!/compare/1602806400/1602892800

Sales at:

12

13

12

14

14 (outdated unusual)

11.5 (unpriced unusual)

There are a few outlier sales at 10 keys, below buy orders.

Although it was recommended to price this hat between 11 and 14, most sales do not actually go that low so I will re-suggest a value of 12-14 keys.

Re-suggestion

https://backpack.tf/suggestion/5fa789dda1db600a370b871d#comment-5fa86a60206a580d05546490