Actually a very nice hat and effect.

6 recent sales, 1 year outdated.

Sale 1:

http://backpack.tf/profiles/76561198001025709#!/compare/1478044800/1478304000

Sold for 23 keys pure.

23 total.

Sale 2:

http://backpack.tf/profiles/76561198180363385#!/compare/1482710400/1482796800

Sold with 19 keys pure and 3 keys sweets for a Frostbite Brain Bucket(46).

24 total, supports the range.

Sale 3:

http://backpack.tf/profiles/76561198035312409#!/compare/1482796800/1482969600

Sold for 21 keys pure and Earbuds(2).

23 total, appears to have quicksold but supports.

Sale 4:

http://backpack.tf/profiles/76561198170162405#!/compare/1482537600/1482624000

1:1 with a Cloud 9 AA(28).

28 total.

Sale 5:

http://backpack.tf/profiles/76561198118957055#!/compare/1482537600/1482624000

Added ~2 keys sweets for a C9 Cannonball(~31).

29 total.

Sale 6:

http://backpack.tf/profiles/76561198035312409#!/compare/1482710400/1482796800

1:1(?) with a C. Moon Steel Toe(27.5).

27.5 total rounding to 28.

Sellers:

http://imgur.com/a/AiwFK

1x 2 month unsold at 26.

1x young seller at 26.

1x 1 month unsold at 28.

1x 3 month unsold at 29.

C. Moon Toe mini:

http://backpack.tf/profiles/76561198137178070#!/compare/1482192000/1482278400

Sold with ~3 keys sweets for a Time Warp Birdcage(~31).

28 total.

http://backpack.tf/profiles/76561198137178070#!/compare/1482105600/1482192000

Sold for a KaW Buckaroo's(11), Unusual SMG(14), and a KS Shooting Star(~2).

27 total.

Calling it 27-28.

Final Verdict:

Sales at 23, 23(QS), 24, 27, 28, and 29.

I am going to call 23 the low end and cap the high end at the unsolds at 26.

Rolling with 23-26.

Credits to NaGa | Trade.tf for Sale 1.

Credits to Foamy the Fearsome for Sales 2 through 6.