Will make a counter-suggestion instead as the previous suggester doesn't want to close his.

Found some other sales meanwhile.

Sellers

2 sellers on OP looking for offers

http://www.tf2outpost.com/trade/25581080 B/O 130 keys

#1 sale (credits to ethanizer9)

http://backpack.tf/profiles/76561198075896315?time=1425715200 -> http://backpack.tf/profiles/76561198075896315?time=1425542400

Sold for Terror-Watt KE + Bruiser's Bandana -> (122 +1)* 0.9 = 111 keys

#2 sale

http://backpack.tf/profiles/76561198075896315?time=1425456000 -> http://backpack.tf/profiles/76561198075896315?time=1425542400

Spe KS Aussie Scattergun + clean Max + 4 buds pure -> 42.5*0.9 + 38 + 48 (at the time) -> 124 keys high-end

#3 sale

http://backpack.tf/profiles/76561198103901986?time=1423468800 -> http://backpack.tf/profiles/76561198103901986?time=1423641600

Sold for Spe KS Aussie RL + 32 keys -> 71.5*0.9 + 32 (at the time) = 96 keys low-end

#4 sale

http://www.tf2outpost.com/trade/24896396 Offered with 3 buds on a clean Moon Ballcap -> no overpay.

http://backpack.tf/profiles/76561198048956541?time=1423296000 -> http://backpack.tf/profiles/76561198048956541?time=1423382400

No sweets were added according to the histories of the backpacks.

x + 3*12.5 (at the time) = 144 -> x = 107 keys

Sales on duped hats

http://www.tf2outpost.com/trade/25570199 Sold for a duped Heart Bonk Boy (could make 113 keys after overpay but both duped)

Conclusion : quite a wide range but sales are well distributed in the range, will leave as it is.

Any comments are welcome.