SALE #1

Sold for a Steaming Detective Noir + 2 white paints + 2 TS paints (~6 keys)

http://www.tf2outpost.com/trade/21067746

http://backpack.tf/item/1119253298 - Noir

http://backpack.tf/item/1920168162 - Marauder

TOTAL - ~21 keys w/Overpay

SALE #2

Sold for a Massed Flies Batter's Helmet

http://backpack.tf/item/843508985 - Helmet

http://backpack.tf/item/1920168162 - Marauder

TOTAL - ~13 keys w/Overpay

SALE #3

Sold for Black Bills + SF Axtinguisher + Conga Taunt + Double Cross Comm

http://backpack.tf/item/43639813(Items that were traded vvv)

http://backpack.tf/item/1359391824

http://backpack.tf/item/2690882993

http://backpack.tf/item/2520473830

http://backpack.tf/item/1920168162 - Marauder

TOTAL - ~12 keys w/Overpay

SALE #4

Sold for a KaW Waxy Wayfinder

http://backpack.tf/item/1330690356 - Marauder

http://backpack.tf/item/2830023018 - Wayfinder

TOTAL - ~1.1 Buds w/Overpay

I would say the 12 and 13 key sales are outliers and 1.1 Buds is accurate.

Please give me informative feedback on how I can improve my suggestions!