Adding Range

Marketplace.tf Sales:

https://marketplace.tf/items/tf2/6522;6;td-486

$177.50/2.05=~87 Keys (May 3rd)

Median Price of Keys that day was 2.05

SCM Sales:

https://steamcommunity.com/market/listings/440/Summer%20Shades%20Strangifier

https://steamcommunity.com/market/pricehistory/?appid=440&market_hash_name=Summer%20Shades%20Strangifier

$52.12/2.34=~22.3 Keys (Apr 28th)

$28.19/2.35=~12 Keys (May 3rd)

$52.18/2.31=~22.6 Keys (May 15th)

$30.31/2.33=~13 Keys (Jun 7th)

$51.35/2.36=~21.8 Keys (Jun 17th)

Total Sales:

12, 13, 21.8, 22.3, 22.6, 87

Excluding The Marketplace Sale as Current Sellers Invalid Sale by about 50 keys, also Excluding Sales @12 and 13 because active buyer orders invalid those sales.