Sellers

[url]http://www.tf2outpost.com/trade/9093942[/url] - Offer 8 keys, yet retracted

[url]http://www.tf2outpost.com/trade/9103587[/url] – Sold 8 keys

[url]http://www.tf2outpost.com/trade/9103981[/url] - Sold 8 keys (to the same guy as previous)

[url]http://www.tf2outpost.com/trade/7473422[/url] - 8 keys offer, yet retracted

[url]http://www.tf2outpost.com/trade/9103307[/url] - Sold 7 keys 3 ref (same guy as two 8 keys boughts)

[url]http://www.tf2outpost.com/trade/9107055[/url] - Offer G. Sharp Dresser (6-6.5 keys)

[url]http://www.tf2outpost.com/trade/9089867[/url] - Offer TS Essential Accessoires (7 keys)

[url]http://www.tf2outpost.com/trade/9109052[/url] - Sold after 19 minutes 6 keys

[url]http://www.tf2outpost.com/trade/9108568[/url] - Offer 6 keys

[url]http://www.tf2outpost.com/trade/9042650[/url] - Offer 5 keys

[url]http://www.tf2outpost.com/trade/9107994[/url] - Offer 5 keys

[url]http://www.tf2outpost.com/trade/9106140[/url] - Sale 8 keys (or Bill’s)

[url]http://www.tf2outpost.com/trade/9109043[/url] - Sale 8 keys

[url]http://backpack.tf/classifieds/search/942/1/0[/url] - Two 8 keys sellers

Buyers

[url]http://www.tf2outpost.com/trade/9096233[/url] - Two 7 keys sellers, one 6 keys

[url]http://www.tf2outpost.com/trade/9091610[/url] - One 6 keys seller, other one sold it for 6 keys. Another 7 keys seller.

[url]http://www.tf2outpost.com/trade/9088111[/url] - 5 keys (sold it already), 6 keys, 7.5 keys

[url]http://www.tf2outpost.com/trade/9088914[/url] - Two 6 keys sellers

[url]http://www.tf2outpost.com/trade/9097103[/url] - 8 keys seller (btw this sold for 6 keys), 7 keys seller

[url]http://www.tf2outpost.com/trade/8728807[/url] - 7 keys offer

It seems that you can buy them for 8 keys (or at least that other suggestor did: [url]http://backpack.tf/vote/id/5138dc00ba2536696e000001[/url], yet it’s also available at 6-7 keys.

Sorry, it's late... ;)