Big thanks to Marty Birdman for finding some important proof in the first sale :)

Sale 1:

http://www.tf2outpost.com/trade/24854038

Sold for a bud and 4 keys

backpack of seller: http://backpack.tf/profiles/76561198045775820?time=1422691200

http://backpack.tf/item/94338321

http://backpack.tf/item/3166378506

http://backpack.tf/item/3340351762

http://backpack.tf/item/2659872868

http://backpack.tf/item/3185144360

Trade occured on the 31st of January, buds were 13 keys then , thus

1.3 buds

Sale 2:

Duped max for Pecularity + earbuds + 8 keys

Proof: http://postimg.org/image/lft7htj13/

Pecularity was offered thus no overpay calculated

(3.2 x 0.9) = x + 1.66

1.22 buds rounded down to

1.2 buds