just helpin :)

SALE 1

sold for 9 keys

https://backpack.tf/profiles/76561198081042493#!/compare/1562630400/1562716800

SALE 2

bulk for pe noble

https://backpack.tf/profiles/76561198097720455#!/compare/1561420800/1561766400

SALE 3

sold for 13 keys + 1 scrap

https://backpack.tf/profiles/76561198311498888#!/compare/1559606400/1559692800

rounds down to 13 keys

1 marketplace sale

19.99 on may 30 (19.99 / 1.82 = 10.98 rounding to 11 keys.

https://marketplace.tf/items/tf2/145;5;u32

classifieds at the time of making this suggestion.

https://gyazo.com/50ec4b3be9e99d78be4a29432f700692

sales at 9 and 13. marketplace sale at 11. 13 seems high due to the seller at 12 for 4 months. taking a range of 9-11 keys here.