(Eugh. I'm sure that I typed in the correct range. Anyway, here's what I intended.)

First and most important, here's what I just bought my super clean one for. http://i.imgur.com/XvsVbiG.jpg I understand that the SCM's generally not used in suggestions as complete evidence but I still want to list it as a service to honesty. Go ahead and check how clean it is! :D http://www.tf2outpost.com/item/440,2795529685,340,5 http://backpack.tf/item/201748248 At this moment, keys are bouncing around about $2.40 on the SCM. http://steamcommunity.com/market/listings/440/Mann%20Co.%20Supply%20Crate%20Key The seller received $220 SCM. I paid 258.75/2.40 =(approximately) 108 keys, which is about 5.7 earbuds (dividing by 19). The seller received 220/2.40/19, which is about 4.8 earbuds. You can see that it was listed for two days before I jumped on it. May you be forever jealous of my lucky purchase.

Okay, now for the sales involving the great unwashed (but still non-duplicated) ones:

http://www.tf2outpost.com/trade/21220195 7 pure.

http://www.tf2outpost.com/trade/21156893 He sold it for 6 pure in two days (see the seller (harsheldon TF2-T)'s comment here http://www.tf2outpost.com/trade/20194685 ).

http://www.tf2outpost.com/trade/20736162 Sold for 6 pure plus 2 keys (rounding to 6). That took about 9 days so isn't a quick-sale.

Currently, FireSpread's trying to sell one for 6. http://backpack.tf/u/76561198123058872 Feel free to check his Outpost and SteamRep status and feel free to disagree with me if you'd like but I'm not going to count that as valid evidence here. If (in some magical world) he is found to be innocent, however, then that can also be counted.

http://www.tf2outpost.com/trade/21178778 http://www.tf2outpost.com/trade/20943732 Clean Scorching Baloo Crown (with possible private negotiation). That crown had recently sold for 6 pure ( http://www.tf2outpost.com/trade/21210423 ) to then have a buy-out price of 7 ( http://www.tf2outpost.com/trade/21305422 ), putting it nicely within my suggested values for the Burning Defiant Spartan.

http://www.tf2outpost.com/trade/20324417 Something was added to this GE Kabuto. http://www.tf2outpost.com/trade/20274177 That Kabuto: http://www.tf2outpost.com/trade/20165474 "clean sunbeams fuka" That: http://www.tf2outpost.com/trade/20987761 It's bounded above by 7. Please don't send me after that... I've tried and it's really nasty. Working backwards, that sale had that Spartan purchased for no more than 7.

http://www.tf2outpost.com/trade/17765997 He wants $230 US but I can tell you from my own experience that he's inactive. I withdrew any intentions to buy from him just because of that. Any way, that's a price there of (taking earbuds at $34 US --- http://tf2finance.com/# ) 230/34, which is about 6.8. For evidence of his inactivity, see the ignored offers such as "6 Buds, 10 Keys" and Capes' offer to also pay his price.

Summary: I jumped on mine when I first saw it, two days after it had been listed. The Level 100 one sold for 7 (he won't say who to). That's where my higher suggested value's from (plus some rounding of the inactive one who wants 6.8 in cash but is ignoring all attempts to pay him that). My next listed sale did sell quickly for 6 (in two days too). However, that sale at 6 pure plus 2 more keys took 9 days. Thus 6 is the point where this goes from quick-selling to market value.