Sale 1: Sold for an Anti-Freeze Mercs Mohawk+103 Keys+Beams Yellow Belt+ Australium Minigun

Before: http://backpack.tf/profiles/76561198060511598?time=1432278000

After: http://backpack.tf/profiles/76561198060511598?time=1432364400

601+103+150+22=876*.9=788.4 rounded to 800 keys flat

Mini on Mohawk:

Sold for a Beams Ninja Hood+Sulphurous Polar Pullover

Before: http://backpack.tf/profiles/76561198049369308?time=1429340400

After: http://backpack.tf/profiles/76561198049369308?time=1429426800

260+407=668*.9=601.2 rounded to 601

Sale 2: Credit to The One

Sold for (to a collector):

Scorching Flames Le Party Phantom (132)

Darkblaze Bear Necessities (100)

Burning Flames Backbiter's Billycock (85)

Stormy Storm Team Captain (68)

300 keys (?)

http://backpack.tf/profiles/76561198060976608?time=1429772400 (April 23rd)

http://backpack.tf/profiles/76561198060976608?time=1429858800 (April 24th)

http://backpack.tf/profiles/76561198060976608?time=1429772400&compare=1429858800

http://backpack.tf/profiles/76561198013192860?time=1429772400 (April 23rd)

http://backpack.tf/profiles/76561198013192860?time=1429858800 (April 24th)

http://backpack.tf/profiles/76561198013192860?time=1429772400&compare=1429858800

(132 + 100 + 85 + 68) * .9 + 300 = 646.5 keys

Rounded to 650 keys

I tracked 300 keys in seller's inventory histories and 303 keys in buyer's inventory histories.

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Darkblaze Bear Necessities:

Sold for The Ooze Big Country (64) + Scorching Flames Respectless Rubber Glove (64) + 8 keys:

http://backpack.tf/profiles/76561198022430252?time=1428908400 (April 13th)

http://backpack.tf/profiles/76561198022430252?time=1428994800 (April 14th)

(64 + 64) * .9 + 8 = 123.2 keys

Roudned to 123 keys

Seller at 100 keys:

http://www.tf2outpost.com/trade/25783657

Previous seller (羊pp7羊) also had a buyout of 100 keys on classifieds (if I recall correctly). We were trying to work out a deal and I remember seeing his listings. I do not have proof of this, but this estimation should be close.

Using 100 keys

Burning Flames Backbiter's Billycock:

http://backpack.tf/vote/id/553aa01ab88d8854368b4617

Offered on a Burning Bubble Pipe (550) No overpay required