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 - 36 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/76561198444840975#!/compare/1560297600/1560384000

https://backpack.tf/profiles/76561198267189538#!/compare/1560297600/1560384000

Sold for a Circling Heart Backbiter's Billycock (18.5 keys) + Green Energy Sober Stuntman (21 keys) = 40 keys

b/o caps at 37 keys : https://bot.tf/stats/listings/MGV502ZM

Sale 4

https://backpack.tf/profiles/76561198069659994#!/compare/1559952000/1560038400

https://backpack.tf/profiles/76561198444840975#!/compare/1559952000/1560038400

Sold for a Blizzardy Storm Pomade Prince (Can't make mini) + 5 keys + Taunt: Rancho Relaxo (30 ref) + 4 ref

Sale 5

https://backpack.tf/profiles/76561198178305653#!/compare/1559692800/1559779200

https://backpack.tf/profiles/76561198069659994#!/compare/1559606400/1559779200

Sold for a Green Energy Herald's Helm (32.5 keys) + 1 key + 15.22 ref + Non-Craftable Voodoo Juju (2.2 keys) = 36 keys

42 keys b/o : https://bot.tf/stats/listings/4Z2R3W0M

Sale 6

https://backpack.tf/profiles/76561198079764636#!/compare/1559260800/1559779200

https://backpack.tf/profiles/76561198178305653#!/compare/1559433600/1559692800

Sold for a Circling Peace Sign Boxcar Bomber (24 keys) + 11 keys = 35 keys

40 keys B/o found : https://bot.tf/stats/listings/4RZ5NZKM

Sale 7

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

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

Bulk

Sale 8

https://backpack.tf/profiles/76561198354220709#!/compare/1560729600/1560816000

https://backpack.tf/profiles/76561198156255538#!/compare/1560729600/1560816000

Sold with a Searing Plasma Prancer's Pride (10.5 keys, mini : https://backpack.tf/suggestion/5d67eeded38172256c24a2dd) + 2 keys for a Morning Glory Ze Goggles (Can't make mini)

Sale 9

https://backpack.tf/profiles/76561198021272428#!/compare/1560643200/1560729600

https://backpack.tf/profiles/76561198354220709#!/compare/1559952000/1560729600

Sold with 2 keys (weird) for 23 keys = 21 keys <--- Countered by quickbuyers

Sale 10

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 11

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 <--- Countered by quickbuyers

Sale 12

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 13

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

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

Untraceable

Summary :

2 @ 34 keys

1 @ 37 keys <--- Unsold at 36 keys for +1 month, best to exclude

1 @ 36 keys

1 @ 35 keys