After getting my last price accepted, I figured I could use the mini information that was gathered for this hat to actually price it as well. Thanks to Polar for all the help gathering it together. (If you would like to take this suggestion Polar, just let me know and I will close it so you may do it instead.)

Quoted from Polar:

I'm betting the belt is closer to 10.5-12 in value with 14 and all the sales under 10 as outliers on either end."

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Sale 1

Morning Glory Master's Yellow Belt + 3 Pure Buds for a Scorching Master's Yellow Belt (14.75)

Total = 11.75, rounded to 12 for neatness. (No overpay added due to offered)

http://www.tf2outpost.com/trade/24657574

Before: http://backpack.tf/profiles/76561198015035843?time=1421308800

After: http://backpack.tf/profiles/76561198015035843?time=1421654400

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Sale 2

Morning Glory Master's Yellow Belt + 5 Pure Keys for a Burning Swagman's Swatter (11 Buds)

Total = ~10.5 Buds (No overpay added due to offered)

http://www.tf2outpost.com/trade/24597179

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Sale 3

Morning Glory Master's Yellow Belt for $285 Cash

Total = $285 / $27.62 (Accepted cash to earbud rate) = 10.31 Buds, rounded to 10.5 for neatness.

Proof of the cash transaction: http://i.imgur.com/oXmqRMX.png

History of the hat: http://backpack.tf/item/3272277423

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As Polar stated in the Amaranthine suggestion, the few other sales below 10 and above 12 are classified as outliers, but feel free to check them in his quote. Thanks a ton!