A modest amount of nuts.

Sold for a Cloud 9 Hetman's Headpiece(15 Keys), a Collector's Pro KS Southern Hospitality(6 Keys) and ~6 Keys in Sweets(27 Keys total)

http://backpack.tf/profiles/76561198069881436/#!/compare/1455004800/1455436800

Sold for a Bubbling Anger(25.5 Keys, rounding to 26)

http://backpack.tf/profiles/76561198060702413/#!/compare/1455523200/1456732800

Sold for a Death at Dusk Trencher's Topper(30 Keys)(B/O was 20, credits to Randy for pointing it out)

http://backpack.tf/profiles/76561198069881436/#!/compare/1454227200/1454313600

http://www.tf2outpost.com/trade/27763953

Sales seem to fit, 20-27 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.