Nitrogen's name comes from the Greek words "nitron" and "genes", meaning "nitre forming"

What the hell is a nitre...

Apparently it's KNO3, Potassium Nitrate

Sale 1

http://www.tf2outpost.com/trade/26954579 Sold for Smoking Counterfeit Billy + 2 keys

B/O for Billy was 16

X = 13 + 2

X = 15

Billy http://backpack.tf/item/1455196821

Batter's http://backpack.tf/item/583822241

Trade http://backpack.tf/profiles/76561198035308553?time=1444114800&compare=1444460400

Mini for Billy

http://backpack.tf/vote/id/5689cec8ba8d883222a94ac8 13 keys, using 13

Sale 2

http://www.tf2outpost.com/trade/27519522 Sold for Blizz Bucket + 2.3 keys of sweets

B/O for Batter's was 15

B/O for Bucket was 14 and was looking for a Batter's Helm

X = 13.5 + 2

X = 16

X = 15 (B/O)

Bucket http://backpack.tf/item/3457883537

Trade http://backpack.tf/profiles/76561198093717717?time=1449475200&compare=1449561600

Batter's http://backpack.tf/item/739713447

Sale 3

http://backpack.tf/profiles/76561198033509686?time=1447488000&compare=1448006400 Bulk for Bubbling Modest

Sale 4

http://backpack.tf/profiles/76561198137643329?time=1449475200&compare=1449561600 Bulk for Pro KS Aussie Scatter

Sale 5

http://www.tf2outpost.com/trade/26865191 Sold for 16 keys

X = 16

Keys http://backpack.tf/profiles/76561198044180589?time=1449302400&compare=1449216000

Batter's http://backpack.tf/item/808089220

Also sold for Blizz Bonk and OF Reggae, can be used to update either

Seller

http://www.tf2outpost.com/trade/27551929 16 keys

http://www.tf2outpost.com/trade/27655564 14 keys, young