Prices With More Than 2 Decimals

some of the items I sell are sold in larger quantities but I want to show the unit price, which is often taken to the fraction of a cent (i.e. $.053).

Is there a way to do this?

The easiest way is to create a new currency with 3 decimal places and simply call it something similar to the currency you are replacing. But note that you'll have to use a different currency identifier (something other than USD) which might cause other problems for remote interfaces that want to know what currency you are using.

You could alter the number of decimal places for USD, but you might run into similar problems because US is expected to be in 2 decimal places....

It's all going to depend on what outside integrations you have (payments, shipping, etc.).