What will you get? I will write any excel formula, specifically customized to your need, I will make your worksheet, faster, more productive, and much more reliable. so if you have several formulas required, and can be done in under 1 hour, then you will only be charged ONCE, for all of them. how long will it take? after you explain to me exactly what you need, I will give you a reasonable estimate to the time required. However, it will nearly always take less than 3 hours. even if the task takes less than 1 hour, the minimum charge is 1 hour fee.