Extremely outdated.

Sold for a Duped Smoking Killer's Kabuto(20 Keys, no overpay bc pure)

http://backpack.tf/profiles/76561198031697350?time=1430181725 -> http://backpack.tf/profiles/76561198031697350?time=1430204400

Sold for an Orbiting Fire Das Hazmattenhatten(26 Keys with Overpay)

http://backpack.tf/profiles/76561198069529553?time=1431586800 -> http://backpack.tf/profiles/76561198069529553?time=1431813303

Sold for a Miami Nights Slick Cut(31 Keys with Overpay)(B/O was 30)

http://backpack.tf/profiles/76561198069529553?time=1431586800 -> http://backpack.tf/profiles/76561198069529553?time=1432537200

http://www.tf2outpost.com/trade/26027325

Sold for a Duped Circling TF Logo Noble Amassment of Hats(18 Keys with Overpay) and a Strange Festive Black Box(~2 Keys)(20 Keys total)

http://backpack.tf/profiles/76561198115832840?time=1432450800 -> http://backpack.tf/profiles/76561198115832840?time=1432450800

Duped Smoking Killer's Kabuto mini suggestion

Sold for 20 Keys

http://backpack.tf/profiles/76561198094828428?time=1428336355 -> http://backpack.tf/profiles/76561198094828428?time=1428390000

Using 20.

Duped Circling TF Logo Noble Amassment of Hats mini suggestion

Sold for an Orbiting Planets Company Man(18 Keys with Overpay) and ~2 Keys in Sweets(20 Keys total)

http://backpack.tf/profiles/76561198170242226?time=1426316400 -> http://backpack.tf/profiles/76561198170242226?time=1427007600

Using 20.

Sales seem to fit, 20-30 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.