#TeamSchoolBoys

Purple Energy Bot Dogger

Sellers

https://gyazo.com/f74568ac125ef66e92b2e430010a006f

1 month @65

Sales

Sale 1:

http://backpack.tf/profiles/76561198061376237#!/compare/1490313600/1490400000

Bulk quicksell

Sale 2:

http://backpack.tf/profiles/76561198061376237#!/compare/1491609600/1491696000

Bulk for Beams El Jefe

Sale 3:

http://backpack.tf/profiles/76561198088079103#!/compare/1488758400/1489363200

Sold with KS Aussie Rocket Launcher (38) for Scorching Detective Noir (77) = 39

Sale 4:

http://backpack.tf/profiles/76561198032176942#!/compare/1490227200/1490313600

Sold for Terror-Watt Brown Bomber (57) = 57

Sale 5:

http://backpack.tf/profiles/76561198032176942#!/compare/1490572800/1490659200

Sold for Sunbeams Tree (87)

http://www.tf2outpost.com/trade/28845513 - B/O 70 = 70

Sale 6:

http://backpack.tf/profiles/76561198069813252#!/compare/1490572800/1490745600

Sold with 1 key of sweets for a Green Energy Bot Dogger (65) = 64

Summary

Sales at 39, 57, 64 and 70. 39 is an obvious outlier, capping high end by month unsold @65. Therefore taking range as 57-65.