Thanks to Aj for helping me out on redoing that!

First sale can be found here: https://backpack.tf/profiles/76561198183343890#!/compare/1608076800/1608163200

And here: https://backpack.tf/profiles/76561198282873040#!/compare/1607904000/1608163200

Other compare link: https://prnt.sc/108qnds - confirmation from seller, thanks to both Aj for contacting Tryhard and for him confirming it.

https://gladiator.tf/listings/5fdb6a45573c6c0f05f5d1d6 - Professional Killstreak Aussie RL - 59 keys at the time of the trade

59 + 17 = 76 keys

https://gladiator.tf/listings/5fdb2cf26559b75f51ae4a89 - original buyout at 100 keys

Taking it as 76 keys.

Second sale:

33 keys + sparkling lights bumble beenie: https://imgur.com/a/MMEpOO7

The Sparklng Lights Bumble Beenie needs a mini, thanks again to Aj for doing that:

https://backpack.tf/suggestion/603ab13543837464b67c62b9 - 40 keys

40 + 33 = 73 keys

https://gladiator.tf/listings/603981119fdbc33bb72ad614 - original buyout at 85 keys

Taking 73 keys here.

With that in mind a range of 73 - 76 seems fine.