Thanks to Baloo!

1st sale - 2.6

http://www.tf2outpost.com/trade/20149403

http://backpack.tf/profiles/76561198081174853?time=1401865200

http://backpack.tf/profiles/76561198081174853?time=1402038000

His Blizzard Kabuto + 4 keys for the Ghost Spartan(2.6-.02=2.58). Offered on so no unusual overpay.

Mini for the Ghost Spartan - 2.6-2.7 buds

http://backpack.tf/profiles/76561198005590158?time=1402297200

http://backpack.tf/profiles/76561198005590158?time=1402383600

Sold for a Orbiting FIre Bonk Boy - 2.7

http://backpack.tf/profiles/76561198086293771?time=1402729200

http://backpack.tf/profiles/76561198086293771?time=1402902000

Sold for a PE Jumper's Jeepcap when he added 1 bud + 4 keys. So I'm going to value the Spartan at 2.6 pure in this trade. The trade was done before the price update, so Larry would have considered the PE Jumper's to be worth ~4 buds at the median price.

2nd sale - 3

http://www.tf2outpost.com/trade/20100818

Sold for a C9 Hat With No Name - 3.5

But the buyout for the Killer's Kabuto was only 3 buds, so taking it as 3

3rd Sale - Invalid

http://backpack.tf/profiles/76561198073843879?time=1401519600

http://backpack.tf/profiles/76561198073843879?time=1401865200

Sold for an outdated, gifted, GE Frenchman's Beret.

4th Sale - Invalid

http://www.tf2outpost.com/trade/20028664 (when buds were 17 keys)

Sold for an Orbiting Fire Ze Goggles + Bubbling Stainless Pot + 8 keys

If we use the Ze Goggles outdated price we get: 2.64

I tried to find some recent sales of Ze Goggles, but I had a hard time.

So please tell me what I need to fix. This is pretty much my first suggestion, but I've been on the website for a long time and know what a good suggestion should look like.