Organization is key when making a suggestion so you don't make 10 more.

Sale #1:

http://i.imgur.com/MMJxME3.png

Sold for Galactic Codex Sucker Slug (suggestion at 120), Nuts n' Bolts Crown of the Old Kingdom (suggestion at 111), Nuts n' Bolts Front Runner (mini at 19)

120 + 111 + 19 = 250 Keys

Sale #2:

http://www.tf2outpost.com/user/773890

http://www.tf2outpost.com/user/500785

http://www.tf2outpost.com/item/440,4497673591,30653,5

http://www.tf2outpost.com/item/440,4468899177,539,5

http://www.tf2outpost.com/item/440,4468899173,30553,5

Sold for a Duped Secret to Everybody El Jefe (250) and a Harvest Moon Condor Cap (258.5 mini)

This sale would make for an insane range, but it is capped at 300 Keys because of B/O:

http://www.tf2outpost.com/trade/27365336

Mini:

Front Runner - Seller at 19 Keys ( http://backpack.tf/classifieds?item=Front+Runner&quality=5&tradable=1&craftable=1&particle=31&australium=-1 )

Old Kingdom - http://backpack.tf/vote/id/56f9989583de6b20d6314b39

Condor Cap- Declined 258.5 Key offer

http://www.tf2outpost.com/trade/27808327