Sold/Willing to accept an offer:

[url]http://www.tf2outpost.com/trade/7526004[/url] - sold for ~14 keys in items

[url]http://www.tf2outpost.com/trade/7467811[/url] - b/o 14 keys, will take 9 naughty keys

[url]http://www.tf2outpost.com/trade/7467811[/url] - b/o 10 keys, already added by someone after 20 hours

[url]http://i.imgur.com/PR2XL.png[/url] - sold for 15 keys + 2 ref (items)

[url]http://www.tf2outpost.com/trade/7461475[/url] - unsure for what it has sold, no keys, no bills in his backpack, just a lime spartan and a aspect from the guy who has the wrench now

[url]http://www.tf2outpost.com/trade/7503524[/url] - sold for 8 keys + s.widow

[url]http://www.tf2outpost.com/trade/7464244[/url] - sold for 8 keys

Unsold:

[url]http://www.tf2outpost.com/trade/7512766[/url] - no valid c/o (unsold for 11 hours)

[url]http://www.tf2outpost.com/trade/7295941[/url] - highest offer was a crate #40 (I believe it's a fake c/o because it's his buyout) (unsold for more than 1 week)

[url]http://www.tf2outpost.com/trade/7353249[/url] - b/o 15 keys, highest offer were "bad" sf stranges. (unsold for 6 days) The key offer isn't valid imo because why should he buy 15 keys from the store when he simply can buy 9 naughty ones that he offered on another trade?

[url]http://bazaar.tf/trade/89152[/url] - b/o 15 keys, offer of ~9 keys in items

[url]http://www.tf2outpost.com/trade/7532929[/url] - b/o 12 keys (unsold for 1 hour)

Conclusion: This is a slow moving item because it's new. 8 and 9 keys are nearly instantly sold (--> could have got more oviously). 10 keys pure took about 1 day and should be the low value. 1 sold/going to be sold for 12 keys, 9 naughty keys (~12 keys) and 1 for 14 keys in items (~12 pure). 2 b/os of 15 keys remain unsold after 1 week (one trade for 15 keys was an outlier, just like those under 10 keys). I couldn't find one sold for 13 or 14 pure, so 12 keys should be the high value.