I had no idea there was a suggestion up for this already. xD Oh well, here's my take on it.

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Sold for Burning Caribbean Conqueror (210 keys) + 40 keys

http://backpack.tf/profiles/76561198057160393?time=1428476400 (April 8th)

http://backpack.tf/profiles/76561198057160393?time=1428562800 (April 9th)

Conqueror: http://www.tf2outpost.com/trade/25366889 was more than likely offered on

210 + 40 = 250 keys

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http://www.tf2outpost.com/trade/25610009

Sold for Burning Fez (71.5 keys) + Ghosts Bonk Boy (140 keys) + Beams Fruit Shoot (69 keys) + 12 keys

http://backpack.tf/profiles/76561198065908363?time=1428303600 (April 6th)

http://backpack.tf/profiles/76561198065908363?time=1428390000 (April 7th)

((71.5 + 140 + 69) * 0.9) + 12 = 264 keys

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http://www.tf2outpost.com/trade/23324382

Sold for a Scorching Rack (212.5 keys) ~213 keys

http://backpack.tf/profiles/76561198089120537?time=1428130800 (April 4th)

http://backpack.tf/profiles/76561198089120537?time=1428217200 (April 5th)

Rack: http://www.tf2outpost.com/trade/25438369

Rack can probably be taken as pure since most of the sales are in pure.

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Sold for GE Gibus

http://www.tf2outpost.com/trade/25149687

http://i.imgur.com/g03WHS4.png

Should be somewhere around the range http://backpack.tf/vote/id/55223fcfb98d8878688b4735

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Burning Conqueror: http://backpack.tf/vote/id/55376460ba8d88de3b8b547d

Ghosts Bonk Boy: http://backpack.tf/vote/id/55375cdbb98d88e52c8b5a8f