3rd time is the charm, i guess. Not a big change from 51 keys, but it's better to have it as accurate as possible.

Resuggest from http://backpack.tf/vote/id/55c92bacdea9e9f1148b4576 and http://backpack.tf/vote/id/55e886fab98d880d7d8b462e

Reason: The new S.F. Buckaroos suggestion was approved for 33-36 keys.

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2 years old price. Two exist, one is duped and hasn't moved: http://backpack.tf/item/1763781956

Other one: http://backpack.tf/item/3319531752

Only valid sale

Purple Energy Data Mining Light sold for Scorching Flames Buckaroos Hat (34.5 keys) + duped Circling TF Logo Safe'n'Sound (?) + Vintage Mining Light (~7 refs)

http://backpack.tf/profiles/76561198069493147?time=1437462000 (July 21st vs 22nd)

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Mini on duped CTFL Safe'n'Sound: Sold for a Bubbling Attendant (?) + Genuine Anger (~8.77 refs) + Strange Specialized Killstreak Festive Flare Gun (?)

http://backpack.tf/profiles/76561198106786444?time=1436770800 (July 13th vs July 25th)

Specialized Ks. Festive Flare Gun sold in SCM between July 12nd and 17th for: 6.50+6.71+6.89+6.62+5.85+4.60+5.63+4.60+5.69+5.79+4.60= ~$5.77/~$2.48= ~2.3 keys ---- after taxes ----2-2.3 keys

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Micro on Bubbling Attendant: sold for 14 keys pure

Seller: http://backpack.tf/profiles/76561198190347086?time=1436857200 (July 14th vs 15th)

Buyer: http://backpack.tf/profiles/76561198198892186?time=1436857200 (July 14th vs 15th)

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Back to the mini: CTFL SnS(Y)= BA(14) + GA(8.77/17.77) + SSK FFG(2.15) ---------> Y= 14 + (0.5+2.15)*0.9 = ~16.4 keys

(keys were 17.55–18 refs at the time)

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Back to the main sale: PE DML(X)= 34.5*0.9 + 16.4 + 7/17.77 = ~48 keys

This is the most recent and only valid sale.

A lot of history checking and maths involved, so if you find something wrong feel free to correct me.

Criticism appreciated!