Sale 1:

https://backpack.tf/profiles/76561198028340642#!/compare/1586649600/1587081600

https://backpack.tf/profiles/76561198882173400#!/compare/1586995200/1587081600

Sold for 14 keys

Sale 2:

https://backpack.tf/profiles/76561198340298815#!/compare/1580947200/1581033600

https://backpack.tf/profiles/76561198080179568#!/compare/1580947200/1581033600

QS

sale 3:

https://backpack.tf/profiles/76561198080179568#!/compare/1581811200/1581897600

https://backpack.tf/profiles/76561198385532048#!/compare/1584316800/1584403200

Untrace

Sale 4:

https://backpack.tf/profiles/76561198385532048#!/compare/1584489600/1585094400

https://backpack.tf/profiles/76561198219205067#!/compare/1584662400/1584748800

sold for CH Shutter

Shutter mini:

https://backpack.tf/suggestion/5ead1f5369789617197350a5

Suggestion for 11.5 keys

https://bot.tf/stats/listings/4R0P8K3K

B/O of 14 keys

sale 5:

https://backpack.tf/profiles/76561198219205067#!/compare/1584748800/1584835200

https://backpack.tf/profiles/76561198158035421#!/compare/1584662400/1584835200

sold for ~14 keys

sale 6:

https://backpack.tf/profiles/76561198158035421#!/compare/1585267200/1585612800

https://backpack.tf/profiles/76561198151879911#!/compare/1585180800/1586044800

Can trace 6 keys

Sale 7:

https://backpack.tf/profiles/76561198151879911#!/compare/1586304000/1586390400

https://backpack.tf/profiles/76561198305494036#!/compare/1586390400/1586476800

QS

Sale 8, 9:

https://marketplace.tf/items/tf2/30051;5;u62

$33.68 / $1.72 = 19.58 keys

$15.46 / $1.69 = 9.15 keys

Total sales @:

9, 11.5, 14, 14, 20 keys

buyers up to ~9.6 keys,

sellers at 15, 16 keys,

Blaze's Part:

2 more recent sales at $26.99 on marketplace = 14 and 15 keys

also, it's probably best to not use the CH shutterbug sale here given all the sales at 14-15 were pure

with those 2 new sales, and the fact that Shutter should not be used here, that puts this suggestion at 14 - 15 keys.

i'd personally be fine with leaving the shutter as it is since it's not really a huge difference since this sale would be 14.5 and there is also a seller at 14 on that which could suggest 15 isn't needed in the range.