hows that 13 keys? a lot of people take australiums as pure so he might have bought it as a quicksell. the black box is 16 keys anyway so your prices dont match up. and you cant really base it of 1 trade in my opinion.

Need more than one sale

https://backpack.tf/profiles/76561198093302304#!/compare/1497398400/1497484800 - bulk

https://backpack.tf/profiles/76561198065049657#!/compare/1497830400/1497916800 - sold for 13 keys

Due to the amount of sales with constant different prices a single sale won't cut it. I'd say a re-suggest would be good with more sales than a single one. But for now id say down votes.

SKS Aussie Black Box (~13) + minor sweets

https://backpack.tf/profiles/76561198312170477#!/compare/1496880000/1496966400

https://backpack.tf/profiles/76561198162680371#!/compare/1496880000/1496966400

9 keys + buds (1.9) + ~1 in sweets. ----- 12 keys total

https://backpack.tf/profiles/76561198162680371#!/compare/1496966400/1497139200

Histories don't match

https://backpack.tf/profiles/76561198043220598#!/compare/1497052800/1497225600

https://backpack.tf/profiles/76561198009657290#!/compare/1497139200/1497225600

Given the amount of sales at 13, I'm fine with pricing it at that. There's also a bot buyer for 11.5, so we can leave 12 out.