https://backpack.tf/item/9321170479

Sale 1) ?

https://backpack.tf/profiles/76561198076562551#!/compare/1609632000/1609718400

https://backpack.tf/item/9289631346

Sale 2) Sold for 3 Keys + 12 Refined

https://backpack.tf/profiles/76561198130489976#!/compare/1604361600/1604707200

Sale 3) ?

https://backpack.tf/profiles/76561199004803157#!/compare/1605830400/1605916800

https://backpack.tf/profiles/76561198171056451#!/compare/1605830400/1605916800

Sale 4) ?

https://backpack.tf/profiles/76561198171056451#!/compare/1606608000/1606694400

https://backpack.tf/profiles/76561198005032783#!/compare/1606608000/1606694400

Sale 5) ?

https://backpack.tf/profiles/76561198005032783#!/compare/1606780800/1606953600

https://backpack.tf/profiles/76561198088423358#!/compare/1606867200/1607644800

https://backpack.tf/item/9430247082

Sale 6) Sold for 5 Keys

https://backpack.tf/profiles/76561198050859586#!/compare/1605225600/1605312000

Sale 7) ?

https://backpack.tf/profiles/76561198091829548#!/compare/1605744000/1605830400

https://backpack.tf/profiles/76561198344097530#!/compare/1605052800/1607558400

https://backpack.tf/item/9431625377

Sale 8) Sold for 5 Keys

https://backpack.tf/profiles/76561198453530349#!/compare/1609200000/1609286400

https://backpack.tf/item/8756180762

Sale 9) ?

https://backpack.tf/profiles/76561198059068755#!/compare/1604448000/1606262400

https://backpack.tf/item/8382793473

Sale 10) ?

https://backpack.tf/profiles/76561198197454422#!/compare/1604361600/1605139200

Sale 11) Sold for 5 Keys

https://backpack.tf/profiles/76561198850121720#!/compare/1607212800/1607299200

https://backpack.tf/item/3595951291

Sale 12) ?

https://backpack.tf/profiles/76561198032708322#!/compare/1606003200/1606435200

https://backpack.tf/item/4760510362

Sale 13) ?

https://backpack.tf/profiles/76561198137216316#!/compare/1607385600/1607472000

https://backpack.tf/item/6926250694

Sale 14) ?

https://backpack.tf/profiles/76561198334598690#!/compare/1605657600/1605744000

https://backpack.tf/profiles/76561198058070833#!/compare/1594339200/1606608000

https://backpack.tf/item/6944774133

Sale 15) Bulk sale

https://backpack.tf/profiles/76561198140316312#!/compare/1604102400/1604188800

Sale 16) Sold for 5 Keys

https://backpack.tf/profiles/76561198140316312#!/compare/1605312000/1605484800

https://backpack.tf/item/7859142024 - Wasn't Unusual

https://marketplace.tf/items/tf2/30609;5;u3044 - Sold for $11.76 x2, $12.71, $12.58 x2, $4 (low), $15 x2, and $9.72

Keys were $1.83 x2, $1.82, $1.79 and $1.78, $1.75 x2, and $1.76 respectively (excluding the $4 sale)

11.76 / 1.83 = 6.43, which rounds to 6.5 Keys

12.71 / 1.82 = 6.98, which rounds to 7 Keys

12.58 / 1.79 = 7.03, which rounds to 7 Keys

12.58 / 1.78 = 7.07, which rounds to 7 Keys

15 / 1.75 = 8.57, which rounds to 8.5 Keys

9.72 / 1.76 = 5.52, which rounds to 5.5 Keys