Sale #1

http://www.tf2outpost.com/trade/18949044

Sold for Terror-Watt Stout Shako(2 * 0.9 = 1.8 buds)

backpack of seller

http://backpack.tf/profiles/76561198043868404?time=1401778800 Before

http://backpack.tf/profiles/76561198043868404?time=1403420400 After

Backpack of buyer

http://backpack.tf/profiles/76561197996420773?time=1402210800 Before

http://backpack.tf/profiles/76561197996420773?time=1402329829 After

Total: ~1.8 buds

Sale #2

http://www.tf2outpost.com/trade/20290934

Sold for 2 buds + 7 keys pure

Backpack of seller

http://backpack.tf/profiles/76561197996420773?time=1402556400 Before

http://backpack.tf/profiles/76561197996420773?time=1402642800 After

Backpack of buyer

http://backpack.tf/profiles/76561197987375941?time=1402470000 Before

http://backpack.tf/profiles/76561197987375941?time=1402758192 After

Total: ~2.4 buds

Sale #3(Calling this an outlier)

http://www.tf2outpost.com/trade/20442926

Traded this + ~5.2 keys in Sweets for Smoking Master's Yellow Belt(1.9 * 0.9 = ~1.7 buds)

Backpack of seller

http://backpack.tf/profiles/76561197987375941?time=1403247600 Before

http://backpack.tf/profiles/76561197987375941?time=1403593200 After

Backpack of buyer

http://backpack.tf/profiles/76561198079758756?time=1403334000 Before

http://backpack.tf/profiles/76561198079758756?time=1403457375 After

Total: ~1.4 buds

Sale #4

http://www.tf2outpost.com/trade/20584424

Sold for Pugilist's Protector Purple Confetti(13 keys * 0.9 = ~12 keys) + Collectors Professional Killstreak Righteous Bison(7 keys) Refer to mini suggestion + ~8.9 keys in sweets

Backpack of seller

http://backpack.tf/profiles/76561198079758756?time=1403506800 Before

http://backpack.tf/profiles/76561198079758756?time=1403593200 After

Backpack of buyer

http://backpack.tf/profiles/76561198105336739?time=1403593200 Before

http://backpack.tf/profiles/76561198105336739?time=1403801358 After

Total: ~1.7 buds

Mini suggestion

Collectors Professional Killstreak Righteous Bison

http://www.tf2outpost.com/trade/20711873 Sold for 1 key + ~6 keys in items.

Taking 7 keys as mini suggestion price.