where does the 5 buds come from?

do you have evidence of the 3 bud sale? why is there a range?

Your was most definitely a quicksell seeing as how your buyer managed to qs it for almost 4+ buds afterward

Based on his backpack http://backpack.tf/profiles/76561198110793516?time=1408345200

Backpack.tf histories are wonky, use outpost and look at histories and you'll see that he traded for those 4 buds or more in items to your current seller. That trade itself might have been a quicksell too

Good job on losing out on profit

Yup. 3 is most likely an outlier here. Will need more evidence here to show that it is a common trade point.