All 9 Unlocked Creepy Crates are being sold in some of these links

Buyers at 1 key

http://www.tf2outpost.com/trade/23508548

http://www.tf2outpost.com/trade/23606828

http://www.tf2outpost.com/trade/23545403

http://www.tf2outpost.com/trade/23573101

http://www.tf2outpost.com/trade/23422130

http://www.tf2outpost.com/trade/23592452

http://www.tf2outpost.com/trade/23426844

http://www.tf2outpost.com/trade/23432835 (2 days old)

http://www.tf2outpost.com/trade/23513168 (3 days old)

http://www.tf2outpost.com/trade/23533114 (4 days old)

Buyers at 1 key 1 scrap

http://www.tf2outpost.com/trade/23422225

Buyers at 1 key 1 ref

http://www.tf2outpost.com/trade/23421202

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Seller at 1 key

http://bazaar.tf/trade/1097864

Sellers at 1 key 2 ref

http://www.tf2outpost.com/trade/23547151

http://www.tf2outpost.com/trade/23442122

http://www.tf2outpost.com/trade/23487187 (12 for a bud)

http://www.tf2outpost.com/trade/23610676 (sold out)

http://www.tf2outpost.com/trade/23429060 (item trade 5 keys for 4 crates)

Sellers at 1 key 3 ref

http://www.tf2outpost.com/trade/23421069

http://www.tf2outpost.com/trade/23427616

Sellers at 1 key 5 ref

http://www.tf2outpost.com/trade/23424407 (2 for 3 keys)

http://www.tf2outpost.com/trade/23444816 (1 key + 4.66 or 3 keys for 2)

http://www.tf2outpost.com/trade/23426353

Seller at 2 keys

http://www.tf2outpost.com/trade/23476416 (6 days old)

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Confirmed at 1 key 1 ref each

http://www.tf2outpost.com/trade/23424644 (paid in 2 buds at 15.5 for 28)

Confirmed at 1 key 2 ref each

http://www.tf2outpost.com/trade/23610676 (2 hrs old)

http://www.tf2outpost.com/trade/23547151 (multi sales)

Confirmed at 1 key 5 ref each

http://www.tf2outpost.com/trade/23424407 (3 keys for 2)

Summery: Many people are asking to buy at 1 key pure, yet sellers are not willing to sell at 1 key pure. It is hard to determine if a sale has been completed due to sellers selling multi-crates at one time. The current sweet spot is at 1.2 keys, or 1 key 2 ref.