oh boy

https://marketplace.tf/items/tf2/30746;5;u9

https://backpack.tf/item/5011383206

$161.11 = 90 keys

Current seller:

https://backpack.tf/item/5165810574

162 keys for months

https://bot.tf/stats/listings/MLRZ560G - 8/26/2019 - 162 keys

https://bot.tf/stats/listings/Y9GG9W3X - 7/30/2019 - 162 keys

https://bot.tf/stats/listings/4P8V2964 - 6/22/2019 - 162 keys

https://bot.tf/stats/listings/4OJDOPWY - 5/18/2019 - 162 keys

https://bot.tf/stats/listings/MQXE70Q4 - 3/29/2019 - 162 keys

https://bot.tf/stats/listings/Y7E2LLN4 - 3/11/2019 - 162 keys

https://bot.tf/stats/listings/4OL2KZV4 - 2/18/2019 - 162 keys

https://bot.tf/stats/listings/Y5OL0Z24 - 1/2/2019 - 162 keys

https://bot.tf/stats/listings/Y5Z61V7M - 12/20/2018 - 162 keys

https://bot.tf/stats/listings/Q42XX7GM - 11/27/2018 - 162 keys

Also shown in some of these listings, the same one sold through Marketplace has been listed just as active and longer than this one I'm describing.