President Carter

https://backpack.tf/item/4115902001

Sale 1) Sold for a Sunbeams Rotation Sensation (122.5 Keys) + Cloud 9 War Pig (54 Keys) + Cool Well-Worn Bloom Buffed Rocket Launcher (34 Keys)

https://backpack.tf/profiles/76561198232041512#!/compare/1560038400/1560124800

Using 54 Keys for the Cloud 9 War Pig, since the suggestion for it was made 4 days after this sale occurred.

122.5 + 54 + 34 = 210.5, which rounds to 210 Keys

Excluding this sale as it's almost outdated and more recent sales are lower.

Rocket Mini

https://backpack.tf/profiles/76561198127938353#!/compare/1558828800/1558915200 - Sold for a Blizzardy Storm Antarctic Eyewear (34 Keys)

Eyewear Micro

https://backpack.tf/suggestion/5d5bc17dd381725d601a817f - 34 Keys

Sale 2) Sold + 59 Keys for a Frostbite War Pig

https://backpack.tf/profiles/76561198046477272#!/compare/1560384000/1560470400

https://backpack.tf/profiles/76561198044652385#!/compare/1560211200/1561766400

This is being used for the War Pig.

Sale 3) Sold for a Burning Flames Surgeon's Stahlhelm + 3 Keys

https://backpack.tf/profiles/76561198044652385#!/compare/1561766400/1562025600

https://backpack.tf/profiles/76561197978500506#!/compare/1561680000/1562025600

Better to give the Stahlhelm a low end.

Sale 4) Sold for a Sunbeams Bomber's Bucket Hat + 30 Keys for a Team Spirit Max's Severed Head (~22 Keys)

https://backpack.tf/profiles/76561197978500506#!/compare/1562803200/1562889600

https://backpack.tf/profiles/76561198171707301#!/compare/1562889600/1562976000

Can't find a Mini for the Bucket Hat, but this sale had a Buyout of 160 Keys -> https://imgur.com/a/VG5SbWL

Sale 5) ?

https://backpack.tf/profiles/76561198171707301#!/compare/1563580800/1563667200

https://backpack.tf/profiles/76561198252999692#!/compare/1563580800/1563667200

Sale 6) Sold for 144 Keys

https://backpack.tf/profiles/76561198252999692#!/compare/1563926400/1564012800

Sale 7) Sold for 136 Keys

https://backpack.tf/profiles/76561198059836930#!/compare/1564617600/1564704000

https://backpack.tf/profiles/76561198154700747#!/compare/1564617600/1564704000

Sale 8) ?

https://backpack.tf/profiles/76561198154700747#!/compare/1564617600/1564704000

https://backpack.tf/profiles/76561198101289864#!/compare/1564704000/1564790400

Sale 9) Sold for a Scorching Flames Troublemaker's Tossle Cap (112.5 Keys) + Spec KS Aussie Scatter (~29 Keys) + Vintage Spec KS Luger (~6.5 Keys)

https://backpack.tf/profiles/76561198101289864#!/compare/1565395200/1565481600

112.5 + 29 + 6.5 = 148 Keys

Sale 10) Sold + Killstreak Australium Sniper Rifle (~26 Keys) for a Scorching Flames Patriot Peak

https://backpack.tf/profiles/76561198285638849#!/compare/1565395200/1565913600

This should be used to drop the Peak.

https://backpack.tf/item/8037195589

Sale 11) ?

https://backpack.tf/profiles/76561198063478666#!/compare/1566604800/1566691200

https://backpack.tf/profiles/76561198160856661#!/compare/1566604800/1566691200

Sale 12) Sold for a Sunbeams Large Luchadore (157.5 Keys) + Dead Presidents Whirly Warrior

https://backpack.tf/profiles/76561198160856661#!/compare/1566691200/1566777600

https://backpack.tf/profiles/76561198046508636#!/compare/1566432000/1566777600

https://imgur.com/a/bqwdJGK - Capped by the Buyout of 165 Keys

https://backpack.tf/item/8034917828

Sale 13) ?

https://backpack.tf/profiles/76561198063478666#!/compare/1566259200/1566432000

https://backpack.tf/profiles/76561198060828964#!/compare/1566345600/1566432000

Sale 14) ?

https://backpack.tf/profiles/76561198060828964#!/compare/1567123200/1567209600

https://backpack.tf/profiles/76561198118859180#!/compare/1567123200/1567209600

https://backpack.tf/item/4163930660

Sale 15) Bulk sale for a Duped Double Spelled HOUWAR

https://backpack.tf/profiles/76561198170083101#!/compare/1559520000/1559606400

https://backpack.tf/profiles/76561198115816025#!/compare/1559347200/1559606400

Sale 16) Bulk sale for a Duped Pro KS Vintage Sparkle Lugermorph

https://backpack.tf/profiles/76561198115816025#!/compare/1559347200/1559606400

https://backpack.tf/item/4117815671

Sale 17) Sold for 136 Keys to a buy order

https://backpack.tf/profiles/76561198170097322#!/compare/1562544000/1562630400

https://backpack.tf/profiles/76561198045232326#!/compare/1562457600/1562544000

https://marketplace.tf/items/tf2/30623;5;u14 - Sold for $367 (200.5 Keys), $370 (204.4 Keys), $260.01 (142.1 Keys), and $201.06 (low)

https://marketplace.tf/items/tf2/5021;6

Rounding 142.1 to 142 Keys, 200.5 to 201 Keys, and 204.4 to 204 Keys

https://imgur.com/a/UPVBWlb - Young Seller at 175 Keys, 3 Day Seller at 219 Keys, and 3 Sellers at 220 Keys (5 Hours [relisted], 3 Months, and 18 Days)

Calling 136 low as one of the sales was a buy order sale (Sale 17) and the other likely was also (the Seller was the person who paid 144 in the prior sale).