Demand for these is lower then the current price. About a week ago, there was a bit more demand but faded fast.

http://tf2tp.com/trade.php?trade=9314879 - I tried to sell for 8 keys, got nowhere

http://tf2tp.com/trade.php?trade=9324895 - I went down to 7..a possible scammer added me after a few days, I rejected

http://tf2tp.com/trade.php?trade=9326042 - I tried for 6 keys + 3.00, and got nowhere..I quicksold for 6 keys..that's why it's marked as deleted for all the trades.

http://www.tf2outpost.com/trade/9785270 (4 days old)- Offer of 7 keys

http://www.tf2outpost.com/trade/9866454 (1 day old) - Trying to sell for 7 keys + 3.00

http://www.tf2outpost.com/trade/9872376 (1 day old) - Trying to sell for 8

http://www.tf2outpost.com/trade/9629878 (1 week old) - Offer of 7 keys

http://www.tf2outpost.com/trade/9838110 (2 days old) - trying to sell for 7 keys

http://www.tf2outpost.com/trade/9855416 (Still new) - quickseller willing to do 7, and quickbuyer might accept(meaning 7 max or less)

http://www.tf2outpost.com/trade/9781565 - Sold for 7 keys + 2.00

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http://www.tf2outpost.com/trade/9904196 (Still new) - Selling for 8 keys..

http://www.tf2outpost.com/trade/9903679 (Still new) - Selling for 7 keys + sweets

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It's really not that hard to find a sharp for 7 keys, and if you post a quickbuy for 7 keys, you can get adds so easily(I can show you this proof as well if you want)

http://www.tf2outpost.com/trade/9639699