Hello,
The amount is not incorrect but the display is not perform like you want.
Now it is not possible for us to understand what you're talking about and where that information is displayed.
So I'm afraid that the only thing we can tell you is an absolute mathematical answer :
4.1 = 4.10 = 4.10000000000
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.