Classifieds as of the post of this suggestion:

x1 at 9.37 Keys. ( http://i.imgur.com/70BoPR2.png )

x1 at 80.44 Refined Metal. ( http://i.imgur.com/qLYcfCO.png )

x5 at 10 Keys(2 has parts, 1 is Killstreak). ( http://i.imgur.com/fK12Ykd.png )

x1 at 10 Keys and 1 Refined - Has parts. ( http://i.imgur.com/gKavHiT.png )

x1 at 10 Keys and 2 Refined. ( http://i.imgur.com/WCab4gO.png )

x2 at 10.5 Keys - 1 Has parts. ( http://i.imgur.com/MnWFmb6.png )

x1 at 10.62 Keys. ( http://i.imgur.com/WtdMR7p.png )

Sellers under 11 Keys:

http://www.tf2outpost.com/trade/19985386 - 10 Keys.

http://www.tf2outpost.com/trade/19968805 - 10 Keys.

http://www.tf2outpost.com/trade/19958263 - 10 Keys.

http://www.tf2outpost.com/trade/19966438 - 10 Keys.

http://www.tf2outpost.com/trade/19965547 - 10 Keys.

http://www.tf2outpost.com/trade/19979357 - 10 Keys.

http://www.tf2outpost.com/trade/19975923 - 10 Keys.

http://www.tf2outpost.com/trade/19940843 - 10 Keys or 18$.

http://www.tf2outpost.com/trade/19980693 - 10 Keys - Killstreak.

http://www.tf2outpost.com/trade/19968548 - 10 Keys - Has parts.

http://www.tf2outpost.com/trade/19870517 - 10 Keys - Autobumper.

http://www.tf2outpost.com/trade/19974309 - 10 Keys and 1 Refined.

http://www.tf2outpost.com/trade/19983036 - 10 Keys and 2 Refined.

http://www.tf2outpost.com/trade/19747998 - 10 Keys and 3 Refined.

http://www.tf2outpost.com/trade/19942562 - 10 Keys and 4 Refined.

http://www.tf2outpost.com/trade/19940836 - 10 Keys and 4 Refined.

http://www.tf2outpost.com/trade/19910067 - 10 Keys and 4 Refined.

http://www.tf2outpost.com/trade/19382165 - 10 Keys and 4 Refined.

http://www.tf2outpost.com/trade/19975613 - 10 Keys and 4 Refined - Specialized - Autobumper.

http://www.tf2outpost.com/trade/19863187 - 10 Keys and 4 Refined - Autobumper - I ->THINK<- this is a mass seller, has a couple trades up with different pans(history) - and a couple are sold.

http://www.tf2outpost.com/trade/19979755 - 10 Keys and 4 Refined.

http://www.tf2outpost.com/trade/19967676 - 10 Keys and 4 Refined.

http://www.tf2outpost.com/trade/19948568 - 10 Keys and 4 Refined.

http://www.tf2outpost.com/trade/19905828 - 10 Keys and 5 Refined - Killstreak - Autobumper.

http://www.tf2outpost.com/trade/19825352 - 10 Keys and 5 Refined - Has parts - Autobumper.

Unsolds at 11 Keys:

http://www.tf2outpost.com/trade/19966569 - 1 Day old - 11 Keys.

http://www.tf2outpost.com/trade/19936941 - 2 Days old - 11 Keys.

http://www.tf2outpost.com/trade/19922542 - 3 Days old - 11 Keys.

http://www.tf2outpost.com/trade/19930092 - 3 Days old - 11 Keys.

http://www.tf2outpost.com/trade/19907694 - 4 Days old - 11 Keys.

http://www.tf2outpost.com/trade/19911735 - 4 Days old - 11 Keys.

http://www.tf2outpost.com/trade/19886254 - 5 Days old - 11 Keys.

http://www.tf2outpost.com/trade/19823668 - 1 Week+ old - 11 Keys.

http://www.tf2outpost.com/trade/19806867 - 1 Week+ old - B/O: 11 Keys.

http://www.tf2outpost.com/trade/19785898 - 1 Week+ old - 11 Keys - Killstreak.

http://www.tf2outpost.com/trade/19741746 - 1 Week+ old - 11 Keys - Autobumper.

http://www.tf2outpost.com/trade/19774842 - 1 Week+ old - 11 Keys - Autobumper.

http://www.tf2outpost.com/trade/19631956 - 2 Weeks+ old - 11 Keys.

http://www.tf2outpost.com/trade/19930263 - 3 Days old - 11 Keys and 3 Refined - Has parts.

http://www.tf2outpost.com/trade/19949715 - 1 Day old - "bp.tf price" - Can mean anything from 10 to 11 keys.

http://www.tf2outpost.com/trade/19954535 - 1 Day old - "bp.tf price" - Can mean anything from 10 to 11 keys.

http://www.tf2outpost.com/trade/19945181 - 2 Days old - "bp.tf price" - Can mean anything from 10 to 11 keys.

http://www.tf2outpost.com/trade/19905085 - 4 Days old - "bp.tf price" - Can mean anything from 10 to 11 keys.

There are more on the market, but all are priced either 12 Keys+ or higher due to Parts/Killstreaks, or unbumped for 1 day+ as of the post of this suggestion, there are some more sellers for 11 Keys, but are very young as of the post of this suggestion, so did not include them.