4month old price

Sale 1 :

Before : http://backpack.tf/profiles/76561198076691532?time=1429426800

After : http://backpack.tf/profiles/76561198076691532?time=1430107540

Sold for a Circling TF Logo Noble Amassment of Hats but a BMOC was added : 32 - 4 = 28 keys

Mini on the amassment :

http://backpack.tf/profiles/76561198109095081?time=1429715661

Sold for a black lv 1 max (~28 ish at the time) + 1 bud (~5 ish at the time) making that ~32 after overpay (because lv1 max).

Sale 2 :

Before : http://backpack.tf/profiles/76561198129471269?time=1432882800

After : http://backpack.tf/profiles/76561198129471269?time=1433018344

Sold for an Aces High Fed-Fightin' Fedora : 47 * 0.9 = 42 keys (outlier)

Mini on the fedora : Not valid recent sales so taking its normal price of 47 keys.

Sale 3 :

Before : http://backpack.tf/profiles/76561198047706237?time=1427266800

After : http://backpack.tf/profiles/76561198047706237?time=1427409106

Sold for a Roboactive Bolted Bicorne : 34 * 0.9 = 31 keys

Sale 4 :

Before : http://backpack.tf/profiles/76561198057412106?time=1430636400

After : http://backpack.tf/profiles/76561198057412106?time=1430738416

Sold for 24 keys pure.

Thus taking a final range of 24 to 31 keys.

Constructive criticism welcome.

PS: Thx a lot to foamy for the help :)