Kill-a-Watt Western Wear

Refreshing. Stable two years later :D

Sale 1:

https://backpack.tf/profiles/76561198231574580#!/compare/1471564800/1471651200

Sold with 1 key in sweets for a Terror-Watt Nanobalaclava (14.5, open suggestion)

X = 15 (rounded)

Sale 2:

https://backpack.tf/profiles/76561198303087132#!/compare/1473465600/1473552000

Sold with ~4 keys in sweets (the taunts, bruiser’s and co-pilot) for a Blizzardy Storm Triboniophorus Tyrannus (17, see mini below)

17 - 4 = 13

X = 13

Sale 3:

https://backpack.tf/profiles/76561198112541142#!/compare/1473638400/1473897600

Sold for a Smoking Larrikin Robin. 6 months outdated, using for it

Minis:

Blizzardy Storm Triboniophorus Tyrannus

https://backpack.tf/profiles/76561198074387943#!/compare/1476057600/1476403200

Sold for an Australium Flamethrower (15) + Revolver Skin (2)

15 + 2 = 17

X = 17

Sales seem to fit, using both

Final Price: 13-15 keys