Hello,
Prices are loaded directly from the database where HikaShop store them with 5 digits.
There is no option for that ; there is a huge difference with the price which can be displayed rounded and the real prices which are stored in the database.
Just like when you edit a product price in the front-end (or backend), the edition of item prices in the order are with all the possible digits (as in the backend).
Changing that would have unwanted side effects like, impacting existing orders when the price stored in the database do not feet perfectly on 2 digits
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.