The toe is outdated, you'll need to do a mini on that, and you should apply overpay to his side of the deal (multiply by 0.9)

so the steel toe is outdated in price. this means you can't use it to base this price on. that's the first issue.

the next issue is that you need to apply overpay. it's assumed that when you accept an unusual, you do so because it's worth more in pure than yours is. therefore, the value of yours is actually lower in pure than the unusual you sold for. to allow for this, you take the value of the unusual you sold for (here 11.5) and you multiply by 0.9 to account for overpay in unusuals. this would leave you with 10.35, but unusual pricing rounds to the nearest key, so this sale would be valued at 10 if the steel toe price was still valid.

Here's how it should go:

Sale #1

Unavailable ---> [url]http://backpack.tf/profiles/76561198094758787?time=1419278839[/url] Sold for a Terror-Watt Baron von Havenaplane (1.9 buds)

1.9 x .9 = 1.7 buds

Mini for Havenaplane: [url]http://www.tf2outpost.com/trade/24249142[/url] Sold for a Miami Nights L'homme Burglerre (2.1 buds)

2.1 x .9 = 1.9 buds

1.9 buds

Sale #2: [url]http://i.imgur.com/flXQass.png[/url] Sold for a Smoking Steel Toe + 3 Strange Sydney Sleepers (1.5 ref) + 2 Strange Neon Annihilators (.33 ref) + Strange Fists of Steel (.22 ref) + Strange Flame Thrower (1 ref) + Strange Part: Burning Enemy Kills (1 ref) + Strange Part: Killstreaks Ended (.66 ref) + Defiant Spartan (1.66 ref)

1.66 + .66 + 1 + 1 + .22 + .33 + 1.5 = 6.37 ref

6.37 ref = 1.02 usd

12.5 keys = 33.66 usd

33.66 + 1.02 = 34.68 usd

34.68 usd = 12.88 keys

12.88 x .9 = 11.592 keys

11.592 rounds to 12 keys

Easy outlier

Mini for toe: [url]http://backpack.tf/vote/id/54a08fcbb98d88de3d8b48fc[/url]

I'm too lazy to do the rest of the suggestion, someone else can take my proof and counter