Hi,
I am sorry but I still don't understand what you're talking about ; I do not visualize your issue or the global problem.
More than that, the plugin "shipping price per product'" (it is is real name) is not an HikaMarket plugin but an HikaShop one. Even if you're in the HikaMarket context, the plugin is the same and should be compatible with HikaMarket.
If you have issues with that plugin, please contact the HikaShop support (in the HikaShop forum section) for more details.
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.