Alliteration Aplenty

https://backpack.tf/item/7282409386

Sale) Sold for 230 Keys + Eldritch Opening Puffy Polar (79.5 Keys) + Haunted Ghosts Chullo (70 Keys) + Ancient Eldritch Smokey (21 Keys) + Starstorm Slumber Wet Works (20 Keys) + Omniscient Orb Brass Bucket (17.5 Keys) + Roaring Rockets Zoomin' Broom (7 Keys)

https://backpack.tf/profiles/76561198150783829#!/compare/1556755200/1556841600

https://backpack.tf/profiles/76561198038637602#!/compare/1556668800/1556755200

https://steamuserimages-a.akamaihd.net/ugc/806618390519171513/8A20259F7DFBF08CB3932597F6233BF799C5364D/ - Thanks, Zaros

230 + 79.5 + 70 + 21 + 20 + 17.5 + 7 = 445, which I'll round to 450 Keys

Puffy Mini

https://backpack.tf/suggestion/5c92f77ed381725d2b409fd1 - 79.5 Keys

Chullo Mini

https://backpack.tf/suggestion/5ccdcf80d381727149554423 - 70 Keys

Wet Works Mini

https://imgur.com/a/hYI3Er6 - Seller at 20 Keys

https://backpack.tf/item/5192246011

No sales. This is a minor part of the trade, so it doesn't really matter.

Bucket Mini

https://marketplace.tf/items/30969;5;u120 - Sold for $35 twice. Keys were ~$1.79 each both times

https://marketplace.tf/items/5021;6/Mann%20Co.%20Supply%20Crate%20Key

35 / 1.79 = 19.55, which rounds to 20 Keys

https://imgur.com/a/wG7wFmu - Seller at 15 Keys

Broom Mini

https://backpack.tf/suggestion/5cce296b67807224c42f8a15 - 7 Keys