Second try with some helpful corrections.

These sales are for a double spelled version with HH and Voices, The two other conquistadors hasn't been traded for 2+ years.

Proof:

Sale 1: Sold for a Demonflame Ye Oiled Baker Boy (85-120) + Strange Mystical Medley Bat Hat (65) = 155 B/o https://bot.tf/stats/listings/MLRXEEEZ

https://backpack.tf/profiles/76561198173506101#!/compare/1572825600/1573084800

Demonflame ye oiled baker recently got a price update. Minis are not as important but including them anyways

( Mini 1 Ye Oiled: Chiroptera Venenata Bombing Run (sales at 44, buyorders at 50, using 50.) + Morning Glory Whoopee Cap (48) + small sweets = 100

https://backpack.tf/profiles/76561198122827281#!/compare/1570060800/1570320000

Mini 2 Ye Oiled: Sold for Head of Steam Punk's Pomp (56) + 50 Keys = 106

https://backpack.tf/profiles/76561198838788284#!/compare/1572480000/1572566400 )

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Sale 2: Conquistador + Elfin (70-75) for a Stormy 13th Hour Surgeon's Stahlhelm

https://backpack.tf/profiles/76561198071640799#!/compare/1572825600/1573084800 - Sold the Elfin for the ~70 Keys

https://backpack.tf/profiles/76561198353908023#!/compare/1573084800/1573171200 - Keys can be seen here

Explanation: https://i.imgur.com/C2CFs9r.png

Stahhelm sold for $305 https://marketplace.tf/items/tf2/616;5;u47 , Other than that I couldnt find usable minis for surgeons but calling low.

Sale 3: I bought it for 120 Keys pure https://i.imgur.com/f8HyJnz.png

Sale 4: Sold for a nebula translator (135) + ~5 in sweets = 140. Buyout was 140, Sold the same day it was listed.

https://backpack.tf/profiles/76561198304001962#!/compare/1570406400/1570492800

Sale 5: Sold for Purple energy rifleman + Strange pro Australium rocket launcher (~50) + 20 keys = ~180. 145 Keys Buyout https://bot.tf/stats/listings/MNLDKZRQ

https://backpack.tf/profiles/76561198173506101#!/compare/1570406400/1570492800

Some irrelevant minis because it sale caps at buyout anyways:

Rifleman sold for $222.99 feb 1 on marketplace https://marketplace.tf/items/tf2/30067;5;u10

Minis for rifleman: https://backpack.tf/suggestion/5cd589c8d3817230420a9fad

Source for trade 4 & 5: https://i.imgur.com/E3QAmKU.png

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Sales at 120 pure, 140, 145, 155

Taking 120-155