https://backpack.tf/item/8381332983

Sale 1:

https://backpack.tf/profiles/76561198279609240#!/compare/1623456000/1623715200

https://backpack.tf/profiles/76561198219926077#!/compare/1623542400/1623715200

Bulk movement. Perhaps a cash trade?

https://backpack.tf/item/5827336359

Sale 2:

https://backpack.tf/profiles/76561198307746956#!/compare/1622332800/1622764800

https://backpack.tf/profiles/76561198148430226#!/compare/1621814400/1623110400

Sold for a Shred Alert, The Dueling Banjo, Burstchester, Fubar Fanfare Unusualifier + 6 keys

Shred Alert price in-date at 1.33 keys avg

Dueling Banjo price in-date at 1.2 keys

Burstchester price in-date at 4.35 keys

https://gladiator.tf/sales?item=Non-Craftable+Unusual+Taunt%3A+The+Fubar+Fanfare+Unusualifier

https://gyazo.com/bf25b1fe08e2af80ad2ca1b81364716a

Past 30 days for Fanfare:

None Bought

Sold:

1 @ 3 keys 18 ref (3.29 keys)

1 @ 3 keys 30 ref (3.49 keys)

https://marketplace.tf/items/tf2/9258;5;uncraftable;td-30761

1 sold on 6/28 @ 12.99 USD

https://marketplace.tf/items/tf2/5021;6

Keys that day at 1.85 USD

12.99 / 1.85 = 7.02 keys

https://gyazo.com/9a4f3b467cc69c1227e1106159cee8a8

All sales seem to fit well within classies range, taking average

3.29 + 3.49 + 7.02 = 13.8, 13.8 / 3 = 4.6 keys

4.6 + 4.35 + 1.2 + 1.33 + 6 = 17.48 -> 17 keys

Taking 17 keys flat