Vivid Plasma Chieftan's Challenge

https://marketplace.tf/items/tf2/250;5;u16

$59.99 on May 13 = 32 keys

$59.99 on May 7 = 32 keys

$50 on March 15 = 29 keys

$38.89 on March 14 = 23 keys

https://bot.tf/stats/listings/4R0PG5ZE some of these sales must be BullDoser and sa1tz, but without their respective histories, it's tough to say which is which. BullDoser was selling forever, so I think it's fair to call anything above 29 an outlier here. They very well could be the recent 32 key sales, so that would just support the highend here

https://backpack.tf/item/277830570 possibly some of the sales are this

https://bot.tf/stats/listings/4R0PG5ZE b/o 23

https://backpack.tf/profiles/76561198913361211#!/compare/1584316800/1584489600

https://backpack.tf/profiles/76561198088277076#!/compare/1583884800/1584489600 23 keys

https://backpack.tf/profiles/76561198854233126#!/compare/1585180800/1585440000

https://backpack.tf/profiles/76561198034355616#!/compare/1585180800/1585267200 can't tell

https://bot.tf/stats/listings/4R0PG5ZE b/o 24

https://backpack.tf/profiles/76561198854233126#!/compare/1583625600/1583712000

https://backpack.tf/profiles/76561198105071091#!/compare/1583539200/1583625600 bulk

23 - 29. 32 either caps at 29 or is an outlier