Team Fortress 2
Counter-Strike: Global Offensive
Only 2 and both have been purchased
Sunbeams Tough-Stuff Muffs, Reverium Irregularis Roaming Roman, and MW Cool Glacial Rocket Launcher
200 keys and FN Cool Horror Holiday Minigun
There are 2 more sales (unboxers sales)
Matteomax received the hat to broker so there wasn't a sale and the other I messaged regarding the original purchase but have not heard back yet.
You missed a 3rd sale then, you should include it before making this suggestion
You cannot pull sale valuations from nowhere.
Downvoted, its still too early to price the new effects