I made a severe and continuous lapse in my judgment... and have overlooked other sales for my recent price suggestions:

Sale 2:

https://backpack.tf/profiles/76561198042123361#!/compare/1535155200/1535500800

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Vivid Plasma Patriot Peak + Purple Energy Prince Tavish's Crown (outdated) = Neutron Star Patriot Peak (outdated)

Purple Energy Prince Tavish's Crown mini:

$90 USD * $1.78 (key) = 50.56... ≈ 51 keys

$90.77 USD * $1.83 (key) = 49.60... ≈ 50 keys

$86.99 USD * $1.9 (key) = 45.78... ≈ 46 keys

Average = (51+50+46) / 3 = 49 keys

Neutron Star Patriot Peak mini:

https://backpack.tf/suggestion/5bd6b6c6cf6c750c103d5002 ~ credits to Ankle Jack

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(120 + 110) / 2 = 115 keys

Vivid Plasma Patriot Peak (?) + Purple Energy Prince Tavish's Crown (49 keys) = Neutron Star Patriot Peak (115 keys)

∴ Vivid Plasma Patriot Peak = 66 keys

May reupload and revise the range of this suggestion if no new information arises.