We call this Conservative

Sale 1

http://www.tf2outpost.com/trade/27490229 Sold for Logo Salty

B/O for Topper was 22

Salty had no trade, presuming offered

X = 23*0.9

X = 21

Salty http://backpack.tf/item/824389101

Topper http://backpack.tf/item/3340864672

Trade http://backpack.tf/profiles/76561198093782049?time=1448524800&compare=1448611200

Mini for Salty

http://backpack.tf/vote/id/56742c72dea9e91d317f76a8 23 keys, using 23

Sale 2

http://www.tf2outpost.com/trade/27484557 Sold with a key for G. Fetti Escorter

B/O for Dapper's was 15

B/O for Escorter was 25

X + 1 = 15

X = 14

Escorter http://backpack.tf/item/4038410280

Dapper's http://backpack.tf/item/3340864672

Trade http://backpack.tf/profiles/76561198044276401?time=1448352000&compare=1448438400

Mini for Escorter

http://backpack.tf/vote/id/5674f999dea9e934147f76b2 15 keys, using 15

Sale 3

http://www.tf2outpost.com/trade/27411404 Sold for Blizz Samur

Samur had no trade, presuming offered

X = 19.5*0.9

X = 18

Samur http://backpack.tf/item/999728529

Dapper's http://backpack.tf/item/3340864672

Trade http://backpack.tf/profiles/76561197964171516?time=1448179200&compare=1448092800

Sellers

http://www.tf2outpost.com/trade/27528914 20 keys

http://www.tf2outpost.com/trade/27566821 15 keys