https://backpack.tf/stats/Unusual/Ze%20Goggles/Tradable/Craftable/10

Purple Energy Ze Goggles (mini for Miami Nights Brotherhood of Arms)

Current price : 37 keys

New price : 34 keys

Sale 1 (August 1 2019)

https://marketplace.tf/items/tf2/177;5;u10

Can't find hat's history

https://manic.tf/keyprice/?at=2019-08-01&price=61.88

Key's price on this day : $1.80

Sold for $61.88

61.88 / 1.8 = 34.37 = 34 keys

Sale 2

https://backpack.tf/profiles/76561198267189538#!/compare/1563148800/1563235200

https://backpack.tf/profiles/76561198183234766#!/compare/1563235200/1563321600

Sold for 34 keys

Sale 3

https://backpack.tf/profiles/76561198156255538#!/compare/1566259200/1566345600

https://backpack.tf/profiles/76561198394877897#!/compare/1566259200/1566345600

Bulk

Sale 4

https://backpack.tf/profiles/76561198314349856#!/compare/1565654400/1565827200

https://backpack.tf/profiles/76561198158206236#!/compare/1565740800/1565827200

Sale for which one I need this mini

Sale 5

https://backpack.tf/profiles/76561198274242643#!/compare/1565481600/1565654400

https://backpack.tf/profiles/76561198314349856#!/compare/1565568000/1565654400

Sold with a Green Energy Slick Cut (36.5 keys) for a Sunbeams Slick Cut (58.5 keys)

58.5 - 36.5 = 22 keys

Sale 6

https://backpack.tf/profiles/76561198799254865#!/compare/1564617600/1564704000

https://backpack.tf/profiles/76561198274242643#!/compare/1564531200/1564617600

Sold for a Disco Beat Down Human Cannonball (Can't make mini)

No b/o found

Sale 7

https://backpack.tf/profiles/76561198077902438#!/compare/1563840000/1564617600

https://backpack.tf/profiles/76561198799254865#!/compare/1564531200/1564617600

Untraceable

Sale 8

https://backpack.tf/profiles/76561198394877897#!/compare/1567814400/1567900800

https://backpack.tf/profiles/76561198038287694#!/compare/1567814400/1567900800

Missing keys (21 keys is lower than the bot's buy order : https://bot.tf/stats/listings/4RGVDV92)

Summary :

2 @ 34 keys

1 @ 22 keys <--- Countered by quickbuyers