Make use of a per field to define the prices of your products per number of items. The per field can be applied to Cost & Selling Prices
This feature allows you to use a price, either cost or selling, that is per number of items.
For example, you could list one of your selling prices as being 45.67 per 10. This Per Field also filters down to Customer and Supplier Invoices etc.
You can also use the Per Field where the price is to more than three decimal places. For example, a Selling Price of .35 per 100 equates to a Selling Price of 0.0035