Hi,
That is not possible using options in HikaShop and if you want to do so, it will requires modifications in the HikaShop views (listing_price) ; or it might be possible using CSS and language override.
HikaShop display prices with the current user currency and it always display that price.
Otherwise, it's incorrect because the user does not see the price he has to pay (in his currency).
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.