Credit to JayTuut for letting me have this and Mindacos for his input on the previous suggestion

Item 1: https://backpack.tf/item/14223830637

Sale 1:

https://backpack.tf/profiles/76561198049884052#!/compare/1768176000/1768262400

https://backpack.tf/profiles/76561198830056399#!/compare/1768176000/1768262400

Purple Energy Classy Capper + Burning Flames Nuke + Burning Flames Airdog + Scorching Flames Well-Rounded Rifleman + Burning Flames Crone's Dome

Purple Energy Classy Capper (65): no usable sales, taking buyers at ~65 keys https://imgur.com/JJ7NS4f

Burning Flames Nuke (145-203 keys, taking mean point of 174): https://backpack.tf/suggestion/6985b7878f2443ba7508f29d

Burning Flames Airdog (47-49 keys, taking mean point of 48): https://backpack.tf/suggestion/696cb2f21b7d4d9e6c0d92dc

Scorching Flames Well-Rounded Rifleman (217-269 keys, taking mean point of 243) https://backpack.tf/suggestion/6985b7efe1bdff8e6304236e

Burning Flames Crone's Dome (668-750 keys, taking mean point of 709) https://backpack.tf/suggestion/698723022972de2a870ebe08

65+174+48+243+709=1239 keys ~1250 keys

Sale 2:

https://backpack.tf/profiles/76561198830056399#!/compare/1770076800/1770163200

https://backpack.tf/profiles/76561198220098345#!/compare/1770076800/1770163200

Scorching Flames Killer Exclusive + Miami Nights Cat's Pajamas + 100 keys

Scorching Flames Killer Exclusive (610-650 keys, mean value of 630): https://backpack.tf/suggestion/69a8333a4309fd647105dc5a

Miami Nights Cat's Pajamas (329 keys) https://backpack.tf/suggestion/6985b7897d2ed52192000cea

630+329+100=1059 keys ~1050 keys

Sales:

1050, 1250

Sellers:

BPTF - https://imgur.com/T7X40O0 1800 keys (28 days)

Item is 1 of 1 so there won't be any other sellers anywhere else

Technically it resold for less but given both were item sales and the fact that there was nearly a month between the two I feel like 1050-1250 keys should be fine