Resuggesting with a better range, based on pulse's proof on the baker.

6 month old price

Sale #1: Bubbling Ye Olde Baker Boy(outdated, taking as 1-1.1) + 1 key (0.9*1.05 +1/17 =1.003(rounded to 1))

Proof: http://www.tf2outpost.com/trade/22615095

Bubbling Baker Boy offered

Backpack

Before: http://backpack.tf/profiles/76561198059688632?time=1410591600

After: http://backpack.tf/profiles/76561198059688632?time=1410678000

(Baker Boy + Key missing)

Seller's Backpack:

http://backpack.tf/profiles/76561198046431509?time=1410591600 (Baker Boy + key now in his bp)

Sale #2:

Quicksold with a C.Bubbles Sola Topi for 40 keys total. Outlier as it is a quicksell.

Before: http://backpack.tf/profiles/76561198074418018?time=1410505200

After: http://backpack.tf/profiles/76561198074418018?time=1410591600

Sale #3:

S. Festive Sniper Rifle + Vintage Soldier's Stash + Vintage Professional's Panama [(24 keys (accomodating for value of parts) + 1.5 keys + 2ref)*0.9 = 23 keys 23/17 = 1.4 (rounded)]

Before: http://backpack.tf/profiles/76561198080975042?time=1410591600

After: http://backpack.tf/profiles/76561198080975042?time=1410764400

Seller's backpack = http://backpack.tf/u/76561198017901187

Stash, s.festive sniper and panama are all there :)

Update on Baker Boy, courtesy of pulse: http://backpack.tf/vote/id/5418133eba8d8859488b4de6 (1-1.1)

First unusual price suggestion, constructive criticism is greatly appreciated, please don't slay me if I've done something wrong :)