Sale 1:

https://backpack.tf/profiles/76561198231082180#!/compare/1550880000/1550966400

https://backpack.tf/profiles/76561197962449627#!/compare/1550880000/1550966400

Sold for:

Scorching Flames Brigade Helm, Cloud 9 Slo-Poke, Fountain of Delight Mannrobics, Fountain of Delight Flippin' Awesome, Hundkopf, ~3 keys in sweets

Scorching Flames Brigade Helm is being priced at 105-115 keys -> using 110 keys.

https://backpack.tf/suggestion/5c8d265cd381720ca81d928d

Cloud 9 Slo-Poke is being priced at 32 keys.

https://backpack.tf/suggestion/5c8d270fd381720e4c5bc35e

Fountain Mannrobics

https://marketplace.tf/items/1162;5;u3005

February 10, 2019 sold for $49.40 / 1.80 = 27 keys

February 5, 2019 sold for $49.40 / 1.81 = 27 keys

https://gyazo.com/173f16696bc019925263b6637aafcbf7

A seller for 22 keys, albeit 2 hours old

Fountain Flippin'

https://marketplace.tf/items/1107;5;u3005

March 2, 2019 sold for $19.99 / 1.79 = 11 keys

https://gyazo.com/ceeb4755970c66454a42f4e96d52f3fc

Sellers for 9.7 and 10.7, although very yung

Hundkopf is 9 keys.

110 + 32 + 27 + 11 + 9 + 3 = 192 keys

Sale 2:

https://backpack.tf/profiles/76561198231082180#!/compare/1550620800/1550707200

Sold for Green Energy Hat of Cards + 22 keys

Hat of Cards Mini:

https://backpack.tf/profiles/76561198016070169#!/compare/1551398400/1551484800

https://backpack.tf/profiles/76561198301240927#!/compare/1551398400/1551484800

Sold for Purple Energy Punk's Pomp

The Punk's Pomp is being priced at 60 keys.

https://backpack.tf/suggestion/5c8b5a8267807232510c47ae

This sale would either value the Cat's Pajamas really low (82, lower than buyers) or the Hat of Cards (170, higher than sellers by a longshot) really high.

This sale cannot be used.

Sale 3:

https://backpack.tf/profiles/76561198026191038#!/compare/1551916800/1552176000

https://backpack.tf/profiles/76561198309178418#!/compare/1551830400/1552089600

Untraceable/Bulk sale

Sale 4:

https://backpack.tf/profiles/76561197994697258#!/compare/1540425600/1540512000

Untraceable/Bulk

Overall, this makes the Cat's Pajamas 190 keys. Current seller for 200+ keys.

This might be a stretch, but that GE Hat of Cards just seems to be really low.