Sale 1:

Sold for Power Surge Timeless Topper + ~10 keys in pure/items

No outpost

Seller: https://backpack.tf/profiles/76561198195731583#!/compare/1500508800/1500595200

Buyer: https://backpack.tf/profiles/76561198150567198#!/compare/1500076800/1500681600

X = 30

Sale 2:

Sold for 27 keys

http://www.tf2outpost.com/trade/29334311 - B/O of 27, buyer offers here

Seller: https://backpack.tf/profiles/76561198008113369#!/compare/1503273600/1503360000

Buyer: https://backpack.tf/profiles/76561198091726683#!/compare/1503187200/1503360000

X = 27

The Snowmann’s history might not match in the buyer’s compare link, but it was sold to a bot. The seller’s compare link shows a key and a scrap coming from the bot. Must’ve sold to the bot before the backpack got scanned.

Sale 3:

Sold for 23 keys + 19 ref (>0.5) (IDs match)

No outpost

Seller: https://backpack.tf/profiles/76561198104872710#!/compare/1498608000/1498780800

Buyer: https://backpack.tf/profiles/76561198321713557#!/compare/1498608000/1498694400

X = 24

Sale 4:

Sold in ~2 days for 23 keys

Seller: https://backpack.tf/profiles/76561198094365132#!/compare/1498953600/1499040000

Buyer: https://backpack.tf/profiles/76561198185387026#!/compare/1498953600/1499040000

X = 23

Sale 5:

Quicksold for 22 keys

No outpost

Seller: https://backpack.tf/profiles/76561198155320889#!/compare/1502755200/1502841600

Buyer: https://backpack.tf/profiles/76561197960694572#!/compare/1502582400/1502841600

X = 22

Sale 6:

Sold for 20 keys + 15 ref (>0.5) most likely to a buy order

No outpost

Seller: https://backpack.tf/profiles/76561198052196602#!/compare/1496880000/1496966400

Buyer: https://backpack.tf/profiles/76561198104872710#!/compare/1496880000/1496966400

X = 21

Sale 7:

Sold for Time Warp Counterfeit Billycock

No outpost

Seller: https://backpack.tf/profiles/76561198321713557#!/compare/1498780800/1498867200

Buyer: https://backpack.tf/profiles/76561198094365132#!/compare/1498780800/1498867200

Should be used on the Counterfeit Billycock.

Sale 8:

Sold with 17 keys for Green Energy Trilby

Seller: https://backpack.tf/profiles/76561198091726683#!/compare/1502755200/1502841600

Buyer: https://backpack.tf/profiles/76561198155320889#!/compare/1502755200/1502841600

Should be used on the Trilby.

Sale 9:

Bulk for Anti-Freeze Vive La France

Seller: https://backpack.tf/profiles/76561198113853563#!/compare/1497830400/1497916800

Buyer: https://backpack.tf/profiles/76561198267189538#!/compare/1497830400/1497916800

Sale 10:

Bulk for the things

Seller: https://backpack.tf/profiles/76561198143097099#!/compare/1498435200/1498521600

Buyer: https://backpack.tf/profiles/76561198053717045#!/compare/1498435200/1498521600

Sale 11:

Bulk for extra things

Seller: https://backpack.tf/profiles/76561198125791160#!/compare/1502150400/1502236800

Buyer: https://backpack.tf/profiles/76561198008113369#!/compare/1502064000/1502236800

Sale 12:

Bulk for Death at Dusk Combustible Kabuto

Seller: https://backpack.tf/profiles/76561198196627443#!/compare/1496966400/1497052800

Buyer: https://backpack.tf/profiles/76561198097135729#!/compare/1496880000/1497052800

Sale 13:

Sold for Circling Peace Sign Glasgow Great Helm + 4 keys

http://www.tf2outpost.com/trade/29218533 - B/O of 25

Seller: https://backpack.tf/profiles/76561198093302304#!/compare/1496793600/1496880000

Buyer: https://backpack.tf/profiles/76561198196627443#!/compare/1496793600/1496880000

Only sales I could find on the Glasgow were bulk or quicksells. Can be used to update the Glasgow instead.

Sellers:

32 keys:

http://i.imgur.com/5szRiIt.png - young

Offers:

http://www.tf2outpost.com/trade/29334215 - 5 days

Sales at:

21

22

23

24

27

30

21, 22 and 23 quicksold. Excluding them.

Going with 24-30.