https://backpack.tf/item/3270995025

Bulk for darkblaze antlers:

https://backpack.tf/profiles/76561198057725524#!/compare/1625097600/1625270400

Duped PE party phantom + GE aviator + 40k:

https://backpack.tf/profiles/76561198027338258#!/compare/1625443200/1625529600

No sales on any dupe PE phantoms in the past 6 months, so excluding this sale.

Galactic gateway starboard + 30k:

https://backpack.tf/profiles/76561198027338258#!/compare/1625529600/1625616000

Suggestion for starboard is slightly outdated here, but none of its more recent sales are usable (minis are not possible for quite a few hats involved, or trades are bulk). Only seemingly priceable sale is this: https://backpack.tf/profiles/76561198027338258#!/compare/1625788800/1626307200, but a mini value for the duped spelled miami viewfinder at about 330k (https://backpack.tf/profiles/76561198072238182#!/compare/1618444800/1618876800) makes that sale way too low. It's current accepted price seems to be much more accurate here, so taking that.

(and pretty sure that isn't even correct since sale seems hard to verify anyway)

640 + 30 = 670k

Seller on SCM for ~800k: https://steamcommunity.com/market/listings/440/Self-Made%20Duck%20Token

Taking 670k.