Covering all SCM Sales

No Killstreak

https://steamcommunity.com/market/listings/440/Strange%20Coffin%20Nail%20Shotgun%20(Factory%20New)

https://steamcommunity.com/market/pricehistory/?appid=440&market_hash_name=Strange%20Coffin%20Nail%20Shotgun%20(Factory%20New)

Nothing recent

Basic Killstreak

https://steamcommunity.com/market/listings/440/Strange%20Killstreak%20Coffin%20Nail%20Shotgun%20(Factory%20New)

https://steamcommunity.com/market/pricehistory/?appid=440&market_hash_name=Strange%20Killstreak%20Coffin%20Nail%20Shotgun%20(Factory%20New)

Nothing recent

Specialized Killstreak

https://steamcommunity.com/market/listings/440/Strange%20Specialized%20Killstreak%20Coffin%20Nail%20Shotgun%20(Factory%20New)

https://steamcommunity.com/market/pricehistory/?appid=440&market_hash_name=Strange%20Specialized%20Killstreak%20Coffin%20Nail%20Shotgun%20(Factory%20New)

Nothing recent

Professional Killstreak

https://steamcommunity.com/market/listings/440/Strange%20Professional%20Killstreak%20Coffin%20Nail%20Shotgun%20(Factory%20New)

https://steamcommunity.com/market/pricehistory/?appid=440&market_hash_name=Strange%20Professional%20Killstreak%20Coffin%20Nail%20Shotgun%20(Factory%20New)

$102.93 / $2.41 = ~43 keys

$350.00 / $2.34 = ~150 keys

Mp.tf

https://marketplace.tf/items/tf2/15132;11;w1;pk76;kt-3;festive

$459.98 / $2.08 = ~221 keys

https://marketplace.tf/items/tf2/15132;15;w1;pk76;strange

$400.00 / $2.09 = ~191 keys

Total Sales

43, 150, 191, 221

https://imgur.com/a/Z6sG71d

221 seems a bit high based on current sellers

Rounding and taking 150 - 190 keys c: