We need the prices shown on the site product and cart area, to the end user on an order to be 4 decimals. It is also preferrable that the shipping cost be shown as four decimals.

Prices for products and for the shipping amount round up in Pressero to two decimals. We have school district clients as end users on the site. Depending on the price with markup (or the shipping price) being calculated, the price is incorrect when the end user checks it, because the end user must confirm the prices to four decimal places. The end user does a check on the order sees that the price is "incorrect" and then starts emailing everyone on our side about the discrepancy.