price with 5 digit decimal in the backend

This maybe a stupid question but is there a reason for price with 5 digit decimal in the backend?
it's giving me abit of an headhake because I have to fiddle with my pricing to show the price right (eg: $59.00 instead of 59.05).
I have set the price format how I want it in the front end by configuring the System>Currencies settings. But how do I make the back end price also 2 digit decimals?

HikaShop stores the price without taxes for your products.
When it is displayed, the price with the taxes is calculated dynamically based on your tax rules.
In some cases like in France the tax is with decimals.
But if you want to display a price with taxes which is round, you might might to specify a price without taxes with more than two decimals, thus, the 5 decimals. That's a standard practice for ecommerce and pricing tools.

Why is that a problem in your case ?

OK, I see... my bad, the "price with tax" does the work rounding up properly. ignitor this post.