Sale 1

Sold for bubbling hive minder (9-10), max's head (24) and ~5.5 key sweets = ((9.5 + 5.5) * 0.9) + (24 * 0.95) = 36 keys

Seller before: http://backpack.tf/profiles/76561198042026035?time=1433401200 (June 4th)

Seller after: http://backpack.tf/profiles/76561198042026035?time=1433487600 (June 5th)

Sale 2

Sold for disco beat down pirate's bandana (20-23) = 21.5 * 0.9 = 19 keys

Seller before: http://backpack.tf/profiles/76561198066564122?time=1430031600 (April 26th)

Seller after: http://backpack.tf/profiles/76561198066564122?time=1430204400 (April 28th)

Sale 3

Messy/complex sale, but BO was 35 keys and it sold in a day - support

http://www.tf2outpost.com/trade/26218663

Buyer before: http://backpack.tf/profiles/76561198104991389?time=1434351600 (June 15th)

Buyer after: http://backpack.tf/profiles/76561198104991389?time=1434438000 (June 16th)

Sale 4

Sold with 1 bud and ~4 key sweets for an aussie rocket launcher - support, as the BO is less than the value of the trade but isn't clear

http://www.tf2outpost.com/trade/26209174 BO was 25-30 keys

Seller before: http://backpack.tf/profiles/76561198013679802?time=1434092400 (June 12th)

Seller after: http://backpack.tf/profiles/76561198013679802?time=1434351600 (June 15th)

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Support

Duped one sold for stormy war pig (outdated at 45)

http://backpack.tf/profiles/76561198037877700?time=1434783600 (June 20th)

http://backpack.tf/profiles/76561198037877700?time=1434870000 (June 21st)

Duped one sold with sweets for pe cockswain's pith helm (outdated at 49)

http://backpack.tf/profiles/76561198037877700?time=1434265200 (June 14th)

http://backpack.tf/profiles/76561198037877700?time=1434697200 (June 19th)

Thanks to Fro5tbit3 for informing me of both sales.

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Not gonna use the dupe sales for range, but they indicate that the lower sales from my last suggestion are low outliers, and one of the lower sales I used is outdated now anyway. The more recent sales aren't useable but also support the 36 key sale as valid.

Feedback welcome.