Well, guess this bad boy can only fit so many cards up his Asian butt.

Aces High Hong Kong Cone

Sale 1

https://marketplace.tf/items/30177;5;u59

https://manic.tf/keyprice/?at=2018-10-13

$72 / $1.78 = 40.45 keys = 40 keys

Sale 2

Bulk with a GE Patriot's Peak for a Spellbound Modest Pile of Scrap (use there)

https://backpack.tf/profiles/76561198050062763#!/compare/1533600000/1533686400

https://backpack.tf/profiles/76561198027338258#!/compare/1533600000/1533686400

Sale 3

Sold for 38 keys

https://backpack.tf/profiles/76561198164651434#!/compare/1537747200/1537833600

https://backpack.tf/profiles/76561197962514444#!/compare/1537747200/1537833600

Sales 4 and 5

SCM sales:

https://steamcommunity.com/market/listings/440/Unusual%20Hong%20Kong%20Cone

https://steamcommunity.com/market/listings/440/Mann%20Co.%20Supply%20Crate%20Key

August 23rd: 83.77€ / 2.09€ = 40,08 keys = 40 keys

https://backpack.tf/profiles/76561198048462415#!/compare/1534896000/1534982400

September 23rd: 83.86€ / 2.11€ = 39.74 keys = 40 keys

https://backpack.tf/profiles/76561198113974130#!/compare/1537660800/1537747200

Sale 6

Sold for 35 keys

https://backpack.tf/profiles/76561198048462415#!/compare/1537315200/1537488000

https://backpack.tf/profiles/76561198288303815#!/compare/1537488000/1537660800

Sellers:

2 days @ 40 https://backpack.tf/item/6991219083

4 days @ 40 https://backpack.tf/item/3339943907

Buyers:

2 days @ 30.13

12 days @ 30

10 days @ 30

Generic buy orders up to 29.53 keys

Sales: 35 / 38 / 40 / 40 / 40

Straightforward range for this. 35-40 keys it is.

Feel free to drop some more sales or leave some feedback down below!

Cheers and have a good one!