Classifieds: http://backpack.tf/classifieds?item=Industrial%20Festivizer&quality=5&tradable=1&craftable=1&australium=-1&particle=36&killstreak_tier=0

Screenshot(s) of Classifieds:

http://imgur.com/ajDSV4t

<Sellers>

11 keys | http://backpack.tf/item/632227793 | http://backpack.tf/u/76561198297554259 | Listed about 12 hours ago

11.56 keys | http://backpack.tf/item/1306273507 | http://backpack.tf/u/76561198356379956 | http://www.tf2outpost.com/trade/28867917 | Listed 1 week ago [Bumped]

13 keys | http://backpack.tf/item/862817334 | http://backpack.tf/u/76561198023051867 | Listed 3 days ago [Bumped]

13 keys | http://backpack.tf/item/1956587411 | http://backpack.tf/u/76561198159855421 | http://www.tf2outpost.com/trade/28863838 | Listed 2 months ago [Bumped]

http://www.tf2outpost.com/trade/28599768 - b/o: 15 keys (5 months)

Sales:

http://backpack.tf/profiles/76561198247953884#!/compare/1491868800/1491955200 - sold for Smoking Ol' Snaggletooth = 10 keys

http://backpack.tf/profiles/76561198148024254#!/compare/1490140800/1491955200 - sold for Green Confetti Heavy Duty Rag = 11 keys

http://www.tf2outpost.com/trade/28771235

http://backpack.tf/profiles/76561198088878793#!/compare/1486684800/1486771200 - sold for 10 keys

Mini's:

Smoking Ol' Snaggletooth:

http://backpack.tf/profiles/76561198119125198#!/compare/1490400000/1491523200 - sold for 8 keys (low)

http://www.tf2outpost.com/trade/28854621

http://backpack.tf/profiles/76561198058818262#!/compare/1491004800/1491436800 - sold for 7 keys + sweets = 10 keys