WAKE UP MAGGOT! (resuggest for new price)

https://backpack.tf/item/4731642704

Sale 1: Sold for a Disco Beat Down Capo's Capper (18 keys) + Strange Professional Killstreak Australium Axtinguisher (7-7.10 keys : Middle is 7.05) + Non-Craftable Spine-Chilling Skull 2011 (1.75-2.5 : Middle is 2.13) + Strange Cold Killer (2.65 keys) + 1 key = 30.83. Rounded to 31 keys.

https://backpack.tf/profiles/76561198091502579#!/compare/1568678400/1568764800

https://backpack.tf/profiles/76561198241925476#!/compare/1568505600/1568764800

Bot.tf Stats Page for Strange Professional Killstreak Australium Axtinguisher

https://bot.tf/stats/item?def=38&q=11&ef=&craft=1&aus=1&ks=3&source=browser_script

https://gyazo.com/eeb74f3bd4dd9740dfd703dedeee8fa5

We're going to cap this at 28, as the B/O was 28 (thanks erik!): https://bot.tf/stats/listings/Y7DLPZWL

FINAL PRICE: 28 KEYS