6 month old price, and yes I do own it.

http://www.tf2outpost.com/trade/22391439 - Sold for a Clean Misty Skull Texas Ten Gallon - 7 buds + 7.56 (.5 buds) keys in sweets

7 buds * 0.9 = 6.3 buds. 6.3+0.5 buds = 6.8

Sweets:

Note - GP = Gold Painted,

3x Dueling Mini-games (1 ref), Strange Tomislav W/ Part (5.33), Strange Beggar's Bazooka W/ Part (5.33 ref), GP Eliminators Safeguard (3.66), GP Couvre Corner (3.33), Orange P Large Luchadore (2.66), The Lone Survivor (1.33), Spec KS Ambi (~2 keys, valued by market price), Uncaft The Teufort Tooth Kicker (2.66), KS Rifle Kit (~2 ref), Toowoomba Tunic (4.66), Strange Cleaner's Carbine (.66), GP The Made Man (4 ref), Gp Gentleman's Ushanka (3.33 ref), GP Fancy Dress Uniform (5 ref), GP The War Pig (3.66), Pop-eyes (1.66), GP Mair Mask (3.66)

...

1+5.33+5.33+3.66+3.33+2.66+1.33+2 keys+2.66+2+4.66+.66+4+3.33+5+3.66+1.66+3.66

= 59 ref + 2 keys = 6.44 keys + 2 keys = 8.44 keys * 0.9 = 7.56

Buyers bp: http://backpack.tf/profiles/76561198076375469?time=1413961200 > http://backpack.tf/profiles/76561198076375469?time=1414047600

Sellers bp:

http://backpack.tf/profiles/76561198062930571?time=1412406000 > http://backpack.tf/profiles/76561198062930571?time=1414047600

Only recent sale

Conclusion - 6.8 buds