Welp. I guess i'm now in charge of this.

Sold for a Dead Presidents Pampered Pyro(10 Keys with Overpay)

http://backpack.tf/profiles/76561198054795885?time=1444201200 (October 7th)

http://backpack.tf/profiles/76561198054795885?time=1444287600 (October 8th)

http://www.tf2outpost.com/item/440,4302713083,1093,5 Gilded History

Sold for a Bubbling Nanobalaclava(12 Keys with Overpay) and a Spec KS Sniper Kit(~1 Key)(13 Keys total)

http://backpack.tf/profiles/76561198045696808?time=1445670000 (October 24th)

http://backpack.tf/profiles/76561198045696808?time=1445756400 (October 25th)

http://www.tf2outpost.com/item/440,4246085066,6523,6 Kit History

Sold with ~10 Keys in Sweets for an Australium Ambassador, Outlier(Credits to The Mighty Bob for the sale!)

http://i.imgur.com/YZic5gj.png

Sold for a Circling Peace Sign Frenchman's Beret(20 Keys with Overpay, Outlier)

http://backpack.tf/profiles/76561198152700942?time=1445842800 (October 26th)

http://backpack.tf/profiles/76561198152700942?time=1445929200 (October 27th)

http://www.tf2outpost.com/item/440,4252126883,180,5 Beret History

http://www.tf2outpost.com/item/440,4302713083,1093,5 Gilded History

Sold for a Green Confetti Killer's Kabuto(B/O was 13)

http://backpack.tf/profiles/76561198054795885?time=1444546800 (October 11th)

http://backpack.tf/profiles/76561198054795885?time=1444633200 (October 12th)

http://www.tf2outpost.com/trade/27195998

http://www.tf2outpost.com/item/440,4210047373,152,5 Kabuto History

Sold for a Dead Presidents German Gonzila(11 Keys with Overpay)

http://backpack.tf/profiles/76561198167235437?time=1445929200 (October 27th)

http://backpack.tf/profiles/76561198167235437?time=1446015600 (October 28th)

http://www.tf2outpost.com/item/440,4253180645,323,5 Gonzila History

http://www.tf2outpost.com/item/440,4224098313,1093,5 Gilded History

Made 20 an outlier mainly because of the tons of sales and B/Os at less. 10-13 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.