First Suggestion ;-;

Thank you JoXu for your proof+d0 for your help :3

Sold mine for 8 Keys Pure - http://www.tf2outpost.com/trade/25029013

http://imgur.com/a/iLEQT

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Sale still valid

Steaming Baker for C. Sandvich + bills + 1.5 keys

http://gyazo.com/190ea3f7fd4fe2a5bd280dc2708111d4

Seller: http://backpack.tf/u/76561198040129858

Buyer: http://backpack.tf/u/76561198147423168

History of da sandvich: http://backpack.tf/item/2772308868

Histroy of unsual: http://backpack.tf/item/474669165

History of bills: http://backpack.tf/item/43908890

Conclusion:

13*0.9 = 11.7

11.7 - 4.6 = 7.1 = Rounding to 7

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Conclusion #2:

Sale at 7 and sale at 8 - going with the range 7-8 keys

Feedback is appreciated :)