Sale 1:

https://backpack.tf/profiles/76561198039731024#!/compare/1528761600/1528848000

https://backpack.tf/profiles/76561198435061144#!/compare/1528761600/1528848000

SCM Sale

https://steamcommunity.com/market/pricehistory/?country=US&currency=1&appid=440&market_hash_name=Unusual%20Festivized%20Professional%20Killstreak%20Brick%20House%20Minigun%20%28Minimal%20Wear%29

Sold for 151.13 CAD

Keys at 3.15 CAD

Total is 47.98 keys

Sale 2:

https://backpack.tf/profiles/76561198435061144#!/compare/1529452800/1529625600

https://backpack.tf/profiles/76561198061108999#!/compare/1529539200/1529625600

Bulk.

Sale 3:

https://backpack.tf/profiles/76561198009309781#!/compare/1530057600/1530144000

Untrace.

Sale 4:

https://backpack.tf/profiles/76561198361129578#!/compare/1530230400/1530316800

https://backpack.tf/profiles/76561197994697258#!/compare/1530230400/1530316800

Sold with ~4 keys in sweets for FN Cool Blitzkrieg Sticky Launcher

Better used there.

Sale 5:

https://backpack.tf/profiles/76561197994697258#!/compare/1530662400/1530748800

https://backpack.tf/profiles/76561198017387417#!/compare/1530662400/1530748800

Untrace.

Sale 6:

https://backpack.tf/profiles/76561198155927905#!/compare/1530662400/1530748800

Untrace.

Sale 7:

https://marketplace.tf/items/15055;15;u704;w2;pk55;kt-3;festive/Specialized%20Strange%20%E2%98%85Cool%20Festivized%20Brick%20House%20Minigun%20(Minimal%20Wear)

Sold for 40 USD

Total is ~21 keys

https://backpack.tf/classifieds?item=Brick%20House%20|%20Minigun%20(Minimal%20Wear)&quality=15&tradable=1&craftable=1&australium=-1&particle=704&killstreak_tier=0

Buyers up to 20 keys

Taking 48 keys flat.