Okay, this was pretty quick, time for this beauty to get a range (yes, within 10 hours):

Higher end: Sold it for Roboactive KE to Woifi / Purplicious: 1:1 trade. Roboactive was updated a week ago, so no need to update that.

Proof:

http://www.tf2outpost.com/trade/21106155

http://i.imgur.com/Zl1pvAK.png (Basically, I scammed Purplicious and Woifi scammed me)

Lower end: Bought this myself for: Green Energy TC (27.8 + 25.5 = 26.65 * 0.9 = 23.985) + Cloudy Moon Modest (17.1 * 0.9 = 15.39) + 2 buds + Tipped Lid #74 = 41.375 buds rounding off to 42 buds.

Since this hat is rare, so there aren't any other proofs except this one to support the price.

Proof:

Trade: http://i.imgur.com/ei9eagP.png

Before: http://backpack.tf/profiles/76561198042344661?time=1404889200

After: http://backpack.tf/profiles/76561198042344661?time=1404975600

Mini-suggestions:

Cloudy Modest (Clean) (Bought myself from Happytro, not many Clean Moon Modest sales) for- Smoking Pyromancer (4.7 * 0.9 = 4.23) + Stormy Bomber (3.6 * 0.9 = 3.24) + GE Bicorne (5.8 * 0.9 = 5.22) + Beams Panama (3.8 * 0.9 = 3.42) + 1 bud = 17.1 buds. [Proof: http://www.tf2outpost.com/trade/19304812 and http://i.imgur.com/MApPBwq.png]

GE TC (Clean) (Sold by [F2P] Wanker to MK Raiden) for- 15 buds + PE Lucky (5) + GE Merry (3.9) + Ghosts Glove (1.5) = 25.4 buds, rounding off to 25.5 buds. [Proof: http://i.imgur.com/1BUYszO.png]

GE TC (Clean) (Sold by Antiar to Oggun) for- GE TC + 10 pure + Scorching Bat Jeepcap (4.9) for Scorching Bat Crones (44 buds - recently updated) which makes GE TC worth (44 - 10 - 4.9) 29.1, rounding off to 29 buds. Sorta outlier. [Proof: http://i.imgur.com/4NQbC6e.png]

GE TC (Clean) (Sold by Cucumber to Antiar) for- Burning Honcho (Duped) (12) + 11 pure + Miami Bonk (4.8) = 27.8 buds. [Proof: http://i.imgur.com/A5CV4Nl.png]

Anti-Freeze TC (34 - recently updated, also sold by me to Oggun) for- GE TC + Scorching Bat Jeepcap (4.9 buds (unpriced, rarely sold (nobody wants it) priced below) + Beams Panama (3.8 ) + Smoking Pyromancer (4.7) + 2 buds, which makes GE TC (34 - 4.9 - 3.8 - 4.7) 18.6 buds. CLEAR outlier, since the buyer wanted it pretty bad plus he personally valued AF TC alot more than backpack.tf's current price, so can't take this into consideration. [Proof: http://i.imgur.com/j7eBf1J.png]

// Scorching Bat Jeepcap I sold it for GE Bicorne (5.8) also I added 1 bud sweets in which 0.5 buds were keys * 0.9 = 0.9 which makes Jeepcap worth (5.8-0.9) = 4.9 buds. [Proof: http://i.imgur.com/yX5QSxQ.png]

Thanks alot to d0 and Woifi for helping me out!