Comparing brokers or prop firm environments using your actual trading sessions is essential because published average spreads rarely capture high-impact volatility or off-hour liquidity thins. To collect a meaningful sample, track your execution prices versus the live feed over at least two weeks of your specific trading window, noting slippage and commission alongside raw spread. When evaluating cost, always factor in round-turn commissions, swap fees if holding overnight, and platform fees.
In prop firm trading, tracking these transaction costs is vital because unexpected widenings during news releases can directly threaten your daily loss limits or breach consistency rules. Always check specific broker and platform conditions on provider review pages before starting a challenge. How do you track your execution quality?