Sale 1:

Sold for Tesla Coil Cranial Carcharodon (17.5) + 8 keys + a 1.5 key pistol skin

http://www.tf2outpost.com/trade/28623347 - B/O of 24

Seller: http://backpack.tf/profiles/76561198062952917#!/compare/1483488000/1483747200

Buyer: http://backpack.tf/profiles/76561198101451237#!/compare/1482796800/1483833600

X = 24 (Capped by B/O)

Sale 2:

Sold for Starstorm Slumber Cranial Carcharodon (18.5) + Pro. KS Australium Axtinguisher (7)

http://www.tf2outpost.com/trade/28580648 - B/O of 24

Seller: http://backpack.tf/profiles/76561197988705887#!/compare/1479427200/1479600000

Buyer: http://backpack.tf/profiles/76561198026908130#!/compare/1479427200/1479513600

X = 24 (Capped by B/O)

Sale 3:

Sold for 22 keys

No outpost

Seller: http://backpack.tf/profiles/76561198086185071#!/compare/1478995200/1479168000

Buyer: http://backpack.tf/profiles/76561198042536322#!/compare/1478736000/1481587200

X = 22

Sale 4:

Sold with 4 keys for Stormy Herald’s Helm

http://www.tf2outpost.com/trade/28619406 - B/O of 26

Seller: http://backpack.tf/profiles/76561198165294687#!/compare/1479513600/1479600000

Buyer: http://backpack.tf/profiles/76561198062952917#!/compare/1479513600/1479600000

Probably better to use on the Herald.

Sellers:

25 keys:

http://i.imgur.com/LTOdfM6.png - young

http://backpack.tf/u/76561198073553007

http://www.tf2outpost.com/trade/28747794

30 keys:

http://www.tf2outpost.com/trade/28747416 - spec. ks, relisted once, about 1 month total

http://backpack.tf/u/76561198026908130

Sales at:

22

24 (2x)

Going with 22-24.