Massage

https://backpack.tf/item/3382114928

Sale) Sold for a Circling Hearts Brain-Warming Wear (17.5 Keys) + ~13 Keys of Items

https://backpack.tf/profiles/76561198008073880#!/compare/1506816000/1506902400

17.5 + 13 = 30.5, which I'll round down to 30 Keys

Brain-Warming Mini

Sale 1) Sold + 1 Uncraftable Pink Paint (1 Key) for a GE Mullet + Strange Pro KS Machina

https://backpack.tf/profiles/76561198176125115#!/compare/1506211200/1506297600

http://www.tf2outpost.com/trade/29349543 - Capped by the Buyout of 20 Keys

Sale 2) Quicksold for 16 Keys + 6 Refined

https://backpack.tf/profiles/76561198061747040#!/compare/1506470400/1506556800

Sale 3) Quicksold for 16 Keys + Conga

https://backpack.tf/profiles/76561198197287330#!/compare/1506729600/1506816000

Sale 4) Sold for 15 Keys

https://backpack.tf/profiles/76561198173257210#!/compare/1508112000/1508198400

Since 15 Keys took 6 Days, and there are 2 other sales around that price, I'm including 15 Keys in the range.

Since the two 16 Keys sales quicksold, I'm including 20 Keys in the range.