All of these are overpriced for some reason. Counter.

Sold for an Orbiting Planets Bloke's Bucket Hat(10 Keys with Overpay)

http://backpack.tf/profiles/76561198137278027?time=1445410800 (October 21st)

http://backpack.tf/profiles/76561198137278027?time=1445583600 (October 23rd)

http://www.tf2outpost.com/item/440,4239022919,181,5 Bloke's History

http://www.tf2outpost.com/item/440,4239337447,427,5 Capo's History

Sold with ~3 Keys in Sweets for an Australium Tomislav(13 Keys with Overpay at the time, 14 Keys without)(10-11 Keys total)

http://backpack.tf/profiles/76561198026360445?time=1445583600 (October 23rd)

http://backpack.tf/profiles/76561198026360445?time=1445756400 (October 25th)

http://backpack.tf/profiles/76561198053401353?time=1445497200 (October 22nd)

http://backpack.tf/profiles/76561198053401353?time=1445583600 (October 23rd)

Sold for 11 Keys(Item IDs match)

http://backpack.tf/profiles/76561198079251125?time=1448092800 (November 21st)

http://backpack.tf/profiles/76561198079251125?time=1448179200 (November 22nd)

Sold with Keys(Item IDs match) for a Bubbling Noble Amassment of Hats(Boom's sale, should be used to update the noble)

http://backpack.tf/profiles/76561198123491005?time=1446451200 (November 2nd)

http://backpack.tf/profiles/76561198123491005?time=1446537600 (November 3rd)

Sales seem to fit, 10-11 Keys should be fine.

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