The mean variant of the Champ Stamp for Heavy.

https://steamcommunity.com/market/listings/440/Strange%20Soviet%20Strongmann

Taking sales from SCM in the past week, listing from most recent sales.

I'm sure that this way of counting already takes fees into account.

Dividing every sales with current key price at $2.46

Item sales:

1 @ $0.70 = 0.28 key

1 @ $0.06 = 0.02 key

1 @ $0.80 = 0.32 key

2 @ $0.75 = 0.30 key

2 @ $0.77 = 0.31 key

1 @ $0.80 = 0.32 key

1 @ $0.73 = 0.29 key

1 @ $0.84 = 0.34 key

1 @ $0.83 = 0.33 key

1 @ $0.81 = 0.32 key

1 @ $0.74 = 0.30 key

1 @ $0.82 = 0.33 key

1 @ $0.74 = 0.30 key

1 @ $0.78 = 0.31 key

There are currently buy orders at $0.67 and one lowest sell order at $0.78. Omitting every sale above $0.78 to make price range more narrow.

Taking 15.22 - 16.88 refined from the sales prices that is between buy and sell orders at 0.28 and 0.31 key.

The average for all the sales combined (except the one marked as red) is 0.31 key. Not really sure why I counted that now that I did..