4 of these in existence

http://www.tf2outpost.com/trade/12277228 - Looks like he bought this for ~1 bud or less from the original owner, way cheap

Sold for 1 bud + 9 keys = ~1.4 buds

Proof: http://backpack.tf/id/76561198043947572?time=1373785200 -> http://backpack.tf/id/76561198043947572?time=1374130800

History is borked on both the bud and keys traded, so here they are in the buyers bp before the trade: http://backpack.tf/id/76561198085718814?time=1373785200 -> http://backpack.tf/id/76561198085718814?time=1373871600

The level 66 bud and 9 of the keys histories go to "Buy Unusuals"(seller), additionally buyers bp goes down 59 USD day after he buys it, which is ~1.35 buds

Next owner is banned on outpost(and missing from the outpost history, but not the bp.tf history)

http://backpack.tf/id/76561198085718814?time=1374649200 -> http://backpack.tf/id/76561198085718814?time=1374735600

Sold for Nuts n Bolts Noble(~1.4) + 12 keys = ~1.9 buds

BP histories of the buyer and seller conflict, one side suggests he paid only the noble, where the other suggests he got the noble and 12 keys (or 12 keys in items that turned into keys). I don't think he got 12 keys out of nowhere(some could have been purchased recently), so my gut tells me he got ~1.9.

http://www.tf2outpost.com/trade/11959075

Can't accurately find what this sold for. (best estimate ~2.2, but I doubt it)

http://www.tf2outpost.com/trade/13535766

One of the relists has a rejected offer of 1.5 buds about a month ago

http://www.tf2outpost.com/trade/13539848

Best offer seems to be a Sulphurous Pencil Pusher(1 of 1), which is not priced, but it currently has an offer of an eerie counterfeit billy(~1.8), which was rejected. So I'm guessing this would be at least a ~2 bud hat.

Price Talk - Suggested Range: 1.4-1.9

Although the second sale might be questionable(personally I believe this did sell for ~1.9), I think that the current offer on one of the ones up for trade helps support the high end a bit. The lower end sale is more solid, and the first sale mentioned was obviously an outlier/quicksell.

I think I made a mistake on this. Closing for now.