ok i guess

Sale #1: ~13 buds

http://www.tf2outpost.com/trade/24788748

Offered with a Pro KS Australium Rocket Launcher + Pro KS Australium Ambassador for a Circling Heart Brotherhood of Arms

9.5 * 0.9 = 8.6 buds

22 - 8.6 = ~13 buds

Sale #2: ~17 buds

http://backpack.tf/profiles/76561198092225424?time=1423382400

Sold for a Duped Sunbeams Human Cannonball + Holy Grail High Five

8 * 0.9 = 7.2 buds

7.2 + 10 = 17.2 buds

Circling Heart Brotherhood of Arms Mini: ~22 buds

http://backpack.tf/profiles/76561198022041905?time=1416271391

Sold for a Purple Confetti Brigade Helm + Nuts n’ Bolts Private Eye + Duped Purple Energy Charmer’s Chapeau + Duped Burning Flame Troublemaker’s Tossle Cap + Orbiting Planets Killer’s Kabuto

1.55 + 1.29 + 8.4 + 11.25 + 1.5 = 23.99 * 0.9 = ~22 buds

Duped Burning Flames Troublemaker’s Tossle Cap Mini: 11.25 buds

http://backpack.tf/vote/id/548674caba8d888b228b57d9

Duped Purple Energy Charmer’s Chapeau Mini: 8.4 buds (thanks woifi)

http://www.tf2outpost.com/trade/24279422 - 7 pure + s. pro machina (~18 keys, see classifieds) 7 + 1.6*0.9 = 8.4 buds

Pro KS Australium Rocket Launcher Mini: ~7 buds

http://steamcommunity.com/market/listings/440/Strange%20Professional%20Killstreak%20Australium%20Rocket%20Launcher

Pro KS Australium Ambassador Mini: ~2.5 buds

http://steamcommunity.com/market/listings/440/Strange%20Professional%20Killstreak%20Australium%20Ambassador

Duped Sunbeams Human Cannonball Mini: ~10 buds

http://backpack.tf/profiles/76561198131161316?time=1421481600

Sold for 10 buds + 2 keys pure

Rounding for reasons