New sales:

https://backpack.tf/profiles/76561198028307864#!/compare/1642291200/1642377600

https://backpack.tf/profiles/76561198140316312#!/compare/1642291200/1642377600 - Bulk

https://backpack.tf/profiles/76561198220098345#!/compare/1643500800/1643587200

https://backpack.tf/profiles/76561198109342990#!/compare/1643500800/1643587200 - Bulk

https://backpack.tf/profiles/76561198311297599#!/compare/1641772800/1641859200

https://backpack.tf/profiles/76561198106897791#!/compare/1641772800/1641859200 - Bulk

https://backpack.tf/profiles/76561198310972287#!/compare/1641427200/1641513600

https://backpack.tf/profiles/76561198311297599#!/compare/1641427200/1641513600 - Sold for a Haunted Ghosts Slick Cut + a Strange Professional Killstreak Australium Black Box (~26 keys) - Should fit the range here

No buyout

https://backpack.tf/profiles/76561198271882486#!/compare/1641427200/1641513600

https://backpack.tf/profiles/76561198310972287#!/compare/1641427200/1641513600 - Spells, not too suitable to price here

https://backpack.tf/profiles/76561198128441100#!/compare/1641427200/1641513600

https://backpack.tf/profiles/76561198271882486#!/compare/1641427200/1641513600 - Untrace

https://backpack.tf/profiles/76561198418740133#!/compare/1642636800/1642723200

https://backpack.tf/profiles/76561198082753631#!/compare/1642636800/1642723200 - Sold for 69 keys

https://backpack.tf/profiles/76561197974940984#!/compare/1642464000/1642896000

https://backpack.tf/profiles/76561199111073161#!/compare/1642809600/1642896000 - Bulk

https://backpack.tf/profiles/76561198045080988#!/compare/1641600000/1641859200

https://backpack.tf/profiles/76561198072034657#!/compare/1624060800/1642723200 - SCM

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

$84.51 / $2.23 = 38 keys

$111.98 / $2.20 = 51 keys

$98.56 / $2.20 = 45 keys

38 will be low compared to buyers, 51 fits the range.

Both 45 and 69 are a couple keys away from the suggested value here, but they'll give the same mid-point, so it's not worth the resuggest. Acceptin' :D