https://steamcommunity.com/market/listings/440/Collector%27s%20Sandvich

Mar 24, 79.10 keys

May 1, 77.96 keys

May 23, 82.18 keys

https://marketplace.tf/items/tf2/42;14

Nothing recent

https://backpack.tf/item/3162428294

https://backpack.tf/profiles/76561198152373135#!/compare/1712966400/1713052800

https://backpack.tf/profiles/76561198397414648#!/compare/1712966400/1713052800

Seller received 35 keys and bought the CC ROFP Macho Mann for 80 keys the same day, so 35 + 80 = 115 keys

https://backpack.tf/item/2958381701

https://backpack.tf/profiles/76561198453530349#!/compare/1714867200/1714953600

https://backpack.tf/profiles/76561198134397080#!/compare/1714867200/1714953600

Keys match in 69 key stack but probably incomplete given buyers

https://backpack.tf/item/2945640190

Duped, nothing

https://backpack.tf/item/2827248480

https://backpack.tf/profiles/76561198025680881#!/compare/1716854400/1716940800

https://backpack.tf/profiles/76561198057452720#!/compare/1716768000/1716940800

Bulk for Circling Hearts Viewfinder

https://backpack.tf/profiles/76561198057452720#!/compare/1717545600/1717632000

https://backpack.tf/profiles/76561199562405056#!/compare/1712966400/1717632000

125 keys (later dumped)

https://backpack.tf/profiles/76561199562405056#!/compare/1717632000/1717718400

https://backpack.tf/profiles/76561199112522018#!/compare/1717718400/1717804800

https://gladiator.tf/sales?item=Collector%27s%20Sandvich&at=2024-06-08T15:25:17.228Z

Dumped for ~100 keys

https://backpack.tf/item/2818801084

https://backpack.tf/profiles/76561199349878855#!/compare/1711324800/1711411200

https://backpack.tf/profiles/76561198042559766#!/compare/1711324800/1711411200

?

https://backpack.tf/item/2667569385

Spec KS and Duped, nothing

https://backpack.tf/item/2605769496

https://backpack.tf/profiles/76561198431725617#!/compare/1717286400/1717372800

https://backpack.tf/profiles/76561198319798435#!/compare/1717286400/1717372800

https://next.backpack.tf/classifieds/snapshots/Max's%20Severed%20Head/665db016e9e95d23e109c201

https://next.backpack.tf/classifieds/snapshots/Collector's%20Sandvich/665da93fafeb76cf5f00ea32

Presumably of the 134 keys, 34 keys went to the max's, so 100 keys for the Sandvich

https://backpack.tf/item/2566727249

https://backpack.tf/profiles/76561198366063847#!/compare/1714348800/1714694400

https://backpack.tf/profiles/76561198978217545#!/compare/1714348800/1714867200

Untraceable

https://backpack.tf/profiles/76561198978217545#!/compare/1715472000/1715731200

https://backpack.tf/profiles/76561199600391046#!/compare/1715472000/1718064000

?

https://backpack.tf/profiles/76561199600391046#!/compare/1717027200/1717718400

https://backpack.tf/profiles/76561198363628327#!/compare/1717113600/1717459200

?

Likely gambling

Sales

78

79

82

100

100

115

125 (dumped)

Classies: https://imgur.com/a/SHHqtg6

Buyers at 101 keys

https://stntrading.eu/item/tf2/Collector%27s+Sandvich

Also buys for 101

https://steamcommunity.com/market/listings/440/Collector%27s%20Sandvich

Sellers at 111 to 123+ keys

82 and below are far below buyers, but two sales/dumps at 100 suggest 100 should still be included, especially accounting for the number of lower sales. Excluding 125 since it was dumped and for being above multiple sellers.

Taking 100 to 115 keys.