Item #1:

https://backpack.tf/item/7311178555

Sale #1:

Seller: https://backpack.tf/profiles/76561198003298603#!/compare/1711929600/1712016000

Buyer: https://backpack.tf/profiles/76561198035464165#!/compare/1711929600/1712016000

Sold for 328 keys + Sapped Power Spike + Frozen Icefall Bumble Beanie + Sparkling Lights Bumble Beanie, Catastrophic Companions, and Stare From Beyond Metal Slug

Power Spike: https://backpack.tf/suggestion/661c44e926e11dc72b05eebd - 290 keys

Sparkling Lights Bumble Beanie: https://backpack.tf/suggestion/66259d4c21518051c00b02a6 - 74 keys

Catastrophic Companions: https://backpack.tf/suggestion/65fe2ab20c2665912d0cc058 - In-date @ 138 keys

SFB Metal Slug: https://backpack.tf/stats/Unusual/Metal%20Slug/Tradable/Craftable/83 - 1/1, no other sales, taking buyers @ 122 keys

Mini For Frozen Icefall Bumble Beanie

Item #1:

https://backpack.tf/item/11781253273

Sale #1:

1:1'd for a Spectral Spectrum + VFB Stormy Storm Tavish Crown, but Crown was traded back shortly after, excluding

Seller: https://backpack.tf/profiles/76561199365584645#!/compare/1705968000/1706140800

Buyer: https://backpack.tf/profiles/76561198113190503#!/compare/1705881600/1705968000

Sale #2:

Untrace

Seller: https://backpack.tf/profiles/76561198113190503#!/compare/1705881600/1705968000

Buyer: https://backpack.tf/profiles/76561199077075999#!/compare/1705881600/1706486400

Item #2:

https://backpack.tf/item/11757789778

Sale 1:

MP Transfer

Seller: https://backpack.tf/profiles/76561198248548464#!/compare/1709078400/1707868800

Buyer: https://backpack.tf/profiles/76561198140316312#!/compare/1708992000/1709078400

Sale #2:

99 keys on seller's side, ID matches

Seller: https://backpack.tf/profiles/76561198140316312#!/compare/1709683200/1709769600

Buyer: https://backpack.tf/profiles/76561198977562505#!/compare/1709769600/1710028800

Sale #3:

Untrace

Seller: https://backpack.tf/profiles/76561198977562505#!/compare/1711324800/1711497600

Buyer: https://backpack.tf/profiles/76561199120854992#!/compare/1704931200/1712361600

Item #3:

https://backpack.tf/item/8786562022

Sale #1:

Bot Dump

Seller: https://backpack.tf/profiles/76561198171091281#!/compare/1709337600/1712448000

Buyer: https://backpack.tf/profiles/76561198349848918#!/compare/1712361600/1712448000

Sale #2:

Untrace

Seller: https://backpack.tf/profiles/76561198349848918#!/compare/1712361600/1712448000

Buyer: https://backpack.tf/profiles/76561198140558083#!/compare/1706486400/1712448000

Item #4

https://backpack.tf/item/8645976611

Sale #1:

Untrace

Seller: https://backpack.tf/profiles/76561198390579099#!/compare/1707609600/1709164800

Buyer: https://backpack.tf/profiles/76561198126034844#!/compare/1709078400/1709164800

Sale #2:

Seller: https://backpack.tf/profiles/76561198126034844#!/compare/1709164800/1709251200

Buyer: https://backpack.tf/profiles/76561199103991885#!/compare/1709078400/1709164800

Sale #3:

MP Transfer??

Seller: https://backpack.tf/profiles/76561199103991885#!/compare/1709251200/1709337600

Buyer: https://backpack.tf/profiles/76561198216531845#!/compare/1709337600/1709251200

Item #5:

https://backpack.tf/item/8530324447

Sale #1:

Bulk Backpack Buy

Seller: https://backpack.tf/profiles/76561198943167038#!/compare/1707609600/1708473600

Buyer: https://backpack.tf/profiles/76561198057412106#!/compare/1708387200/1708473600

Sale #2

128 keys on the seller's side, ID matches

Seller: https://backpack.tf/profiles/76561198057412106#!/compare/1708473600/1708560000

Buyer: https://backpack.tf/profiles/76561199579303448#!/compare/1708473600/1708560000

Item #6:

https://backpack.tf/item/8441755300

Lots of trade backs and then MP transfer, ignoring

Item #7:

https://backpack.tf/item/8381819753

Sale #1:

Bulk for Dark Doorway Universal Translator, better used there

Seller: https://backpack.tf/profiles/76561198003298603#!/compare/1711929600/1712016000

Buyer: https://backpack.tf/profiles/76561198035464165#!/compare/1711929600/1712016000

Sale #2:

STN Dump

Seller: https://backpack.tf/profiles/76561198035464165#!/compare/1712102400/1712016000

Buyer: https://backpack.tf/profiles/76561198311498888#!/compare/1712016000/1712102400

MP Sales:

https://marketplace.tf/items/tf2/31085;5;u135

Sale #1:

Sold for $229.99 on March 3rd, key price average @ $1.69

229.99/1.69 = 136 keys

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

Sale #2:

Sold for $229.99 on March 23, key price @ $1.67

229.99/1.67 = 138 keys rounded

Sale #3:

Sold for $229.99 on April 12, key price average @ $1.65

229.99/1.65 = 139 keys rounded

Sale #4

Sold for $229.99 on April 13th, key price average @ $1.65

229.99/1.65 = 139 keys rounded

Sales @ 99, 128, 136, 138, 139, 139

Taking 128 for the Beanie as seller @ 124 has been there for months, excluding others as 99 is below buyers and MP Sales 10+ keys above seller

https://imgur.com/a/ChvN6A2

290 + 74 + 138 + 122 + 128 = 752 keys

Rounding down to 750 keys flat!