Finding the right pricing strategy for your distribution business can be daunting. It is of course a full time job (or should be).
Do you always base your pricing on cost ? Maybe you should consider pricing based on segments of customers or how you add value in certain areas.
Here is a great article about complex pricing models and why it is not a bad thing to be complex with your pricing. Dynamics NAV for Distributors has many pricing models to use. Also available are many tools to analyze your sales of items by customer and customer segments. These pricing and analytic tools are very important to your long term success and profitability.