Love and brotherhood.

https://backpack.tf/item/3941950017

Sale 1) Sold for a Duped Cloud 9 Killer Exclusive (81.5 Keys)

https://backpack.tf/profiles/76561198100464640#!/compare/1513641600/1513728000

Rounds to 82 Keys

Killer Mini

Killer Sale 1) Sold for 70 Keys

https://backpack.tf/profiles/76561198110521610#!/compare/1513468800/1513641600

Killer Sale 2) Sold for 73 Keys

https://backpack.tf/profiles/76561198273305717#!/compare/1514419200/1514505600

Killer Sale 3) Sold for a Logo Kabuto (29 Keys) + Max's (~20 Keys) + Pro KS Aussie Stickybomb (~19 Keys) + Blizzardy Conjurer's (17 Keys) + ~8 Keys of Items

https://backpack.tf/profiles/76561198252283568#!/compare/1517702400/1517875200

29 + 20 + 19 + 17 + 8 = 93 Keys

Sale 2) Sold for a Sunbeams Professional's Panama (51.5 Keys) + Neutron Star Nasty Norsemann (27 Keys) + Hot BS Low Profile SMG (13.5 Keys) + 5 Keys

https://backpack.tf/profiles/76561198208062409#!/compare/1513814400/1513900800

51.5 + 27 + 13.5 + 5 = 97 Keys. High Outlier.

Panama Mini

https://backpack.tf/suggestion/5a7b3ab7cf6c7572053616e8 - 51.5 Keys

Norsemann Mini

https://marketplace.tf/items/30810;5;u107 - 2 Sales at $52.99 (11/15 and 12/6). Keys were ~$1.98 on 11/15 and ~$1.93 on 12/6. Both sales are ~27 Keys.

https://backpack.tf/profiles/76561198021055079#!/compare/1513382400/1513468800 - Sold for an Isotope BS Blitzkrieg Knife (27.5 Keys) + 1.5 Key of Items

http://www.tf2outpost.com/trade/29542957 - 4 Day Seller at 25 Keys

Knife Macro

https://backpack.tf/profiles/76561198165802400#!/compare/1513296000/1513382400 - Sold for an Aussie Knife (16.5 Keys) + Strike Results (11 Keys)

16.5 + 11 = 27.5 Keys

SMG Mini

SMG Sale 1) Sold for a Pro KS Aussie Amby (~12 Keys) + 2 Keys

https://backpack.tf/profiles/76561198168863803#!/compare/1513209600/1513296000

12 + 2 = 14 Keys

SMG Sale 2) Quicksold for 11 Keys + 10 Refined

https://backpack.tf/profiles/76561198204433501#!/compare/1513900800/1513987200

SMG Sale 3) Sold + 9 Keys for a GE Sober Stuntman (22 Keys)

https://backpack.tf/profiles/76561198232041512#!/compare/1513900800/1513987200

22 - 9 = 13 Keys

Sober Macro

https://imgur.com/a/XLyHN - 27 Day Seller at 22 Keys, 3 Day Seller at 23 Keys

https://backpack.tf/item/244268284 - 22 Key Seller

https://backpack.tf/item/221098562 - 23 Key Seller

Sale 3) Sold for a Scorching Flames Ol' Guadalajara (60 Keys)

https://backpack.tf/profiles/76561198357958922#!/compare/1513814400/1513900800

Countered by Buyers.

Sale 4) Sold for a Green Confetti Salty Dog

https://backpack.tf/profiles/76561198167390699#!/compare/1515888000/1515974400

Countered by Buyers.

Sale 5) Sold for a Haunted Ghosts Das Hazmattenhatten + 22 Keys

https://backpack.tf/profiles/76561198069559160#!/compare/1515888000/1515974400

iTrade said his Buyout was 65 Keys. Counting this sale as a low Outlier (additionally, it sold in <1 Day).

Sale 6) Sold + Max's (~20 Keys) + 13 Keys for a Nether Trail Prehistoric Pullover (105 Keys)

https://backpack.tf/profiles/76561198143037792#!/compare/1516320000/1516492800

105 - 20 - 13 = 72, which I'll round to 70 Keys

Sale 7) Sold for a Scorching Flames Ye Oiled Baker Boy + Pro KS Aussie Minigun + Searing Plasma Backbiter's + Circling TF Logo Mongolian

https://backpack.tf/profiles/76561198050062763#!/compare/1516665600/1516752000

High Outlier.

---------------------------------------------------------------

https://backpack.tf/item/4998819338

Sale 8) Sold for a Starstorm Insomnia Merc's Mohawk + ~5 Keys of Items

https://backpack.tf/profiles/76561198139732126#!/compare/1514505600/1514592000

http://www.tf2outpost.com/trade/29497288 - Capped by the Buyout of 90 Keys

Sale 9) Sold for a Starstorm Insomnia Merc's Mohawk + Dead Presidents Trucker's Topper

https://backpack.tf/profiles/76561198155591052#!/compare/1514937600/1515110400

http://www.tf2outpost.com/trade/29497571 - Capped by the Buyout of 85 Keys

Sale 10) Sold for an It's a Mystery to Everyone Prehistoric Pullover

https://backpack.tf/profiles/76561198081761490#!/compare/1516838400/1517184000

http://www.tf2outpost.com/trade/29530077 - Capped by the Buyout of 85 Keys

---------------------------------------------------------------------------------------------------------------------------------

https://backpack.tf/item/3468634581

Sale 11) Sold for 63 Keys

https://backpack.tf/profiles/76561198119384188#!/compare/1514160000/1515196800

Counting this sale as a low Outlier, but supportive of 70 Keys.

Sale 12) Sold + Duped Circling Heart Bonk Boy for a Sunbeams Bonk Boy + Max's (~20 Keys)

https://backpack.tf/profiles/76561198114402400#!/compare/1516406400/1516492800

Bulk sale.

----------------------------------------------------------------

https://backpack.tf/item/2346043265

Sale 13) Sold for a Purple Energy Human Cannonball (76.5 Keys)

https://backpack.tf/profiles/76561198008073880#!/compare/1516060800/1516147200

Rounds to 77 Keys

Sale 14) Sold for an Eldritch Flame Prehistoric Pullover (87.5 Keys)

https://backpack.tf/profiles/76561198031476026#!/compare/1516147200/1516233600

Rounds to 88 Keys

https://imgur.com/a/MZJta - 2 Day Seller at 80 Keys, <1 Hour Seller at 85 Keys, 8 Hour Seller at 90 Keys

https://backpack.tf/item/2411177104

https://backpack.tf/item/2346043265

https://backpack.tf/item/3941950017

Using the sales at 60, 63, and 65 to support 70 being in the range.