Run the sim using variable slippage, then download the transactions. Let’s say your transaction price is in column E, the amount is in column F, and the fees are in column G. Then your formula would be Abs(G4/F4)-0.01/E4. The results should all be close to the slippage amounts specified here: New slippage option in Simulations: "Variable". You can then determine the range of average daily dollar volume for each stock.