Roboactive Dragonborn Helmet

Mini.

New price: 60 keys

[proof below]

SALE #1 = invalid

https://backpack.tf/profiles/76561198068404730#!/compare/1528329600/1528588800

Bulk.

SALE #2 = invalid

https://backpack.tf/profiles/76561198001368533#!/compare/1523750400/1524355200

https://backpack.tf/profiles/76561198001368533#!/compare/1523750400/1526428800

Bulk.

SALE #3 = invalid

https://backpack.tf/profiles/76561198255903931#!/compare/1529107200/1529193600

https://backpack.tf/profiles/76561198085628805#!/compare/1529107200/1529193600

Bulk.

SALE #4 = 60 keys

https://backpack.tf/profiles/76561198165716566#!/compare/1527033600/1529107200

https://backpack.tf/profiles/76561198255903931#!/compare/1529020800/1529107200

http://www.tf2outpost.com/trade/29575910 - B/O 75 keys

Sold for a Strange Kill-a-Watt Chill Chullo (53) + 6 keys = 59 keys. Rounding to 60 keys for having a neat price. Counted buyer side as well, first 3 and last 3 keys match.

Chullo later sold for:

https://backpack.tf/profiles/76561198313695660#!/compare/1527465600/1527984000

https://backpack.tf/profiles/76561198313695660#!/compare/1528761600/1528848000

https://backpack.tf/profiles/76561198126693824#!/compare/1527897600/1527984000

https://gyazo.com/623bd245c57d9fe39c7c1de0509f5e4d

Sold for a Miami Nights Bonk Boy (51) + ~2 keys mixed = 53 keys. According to Quesamo, he was brokering it. Hence why the compare links are so messy.

SUMMARY

Sales: 60 keys

Sellers: 100 keys

https://gyazo.com/7fd08c6ce723efcd92f1f4a9da155718

Going with 60 keys.