Young seller at 11. I am skeptical that including 14 makes sense if it doesn't sell soon. https://i.imgur.com/D9mniE8.png

https://backpack.tf/profiles/76561198306856753#!/compare/1530144000/1530230400

https://backpack.tf/profiles/76561198347528028#!/compare/1530144000/1530230400

http://www.tf2outpost.com/trade/29684571 - B/O 13 keys

Sold for a Purple Confetti Shooter's Tin Topi (8) + 5 keys = 13 keys.

https://backpack.tf/profiles/76561198385940902#!/compare/1528754400/1528840800

https://backpack.tf/profiles/76561198306856753#!/compare/1528588800/1528761600

https://imgur.com/D9mniE8

High likely sold for 11 pure (credits to iTrade for the screenshot).

I'm not sure if I would use that 14 key sale here. It got dumped on quickbuyer bot for ~9.5 ( https://gyazo.com/9acfabed94d7e0c144e69e9e833057df + https://backpack.tf/item/5375785105) within a few hours of buying it. Makes me think that the buyer either regretting it or was simply burning pure, either way, in my opinion that should not get included. I would probably go with 11-13 here.