Hello,
There is no import system for eShop but I can see that eShop have a CSV export system.
So maybe you can modify a CSV from eShop to make it compatible with the CSV format required by the HikaShop import system.
Otherwise, there are great components like CSV Improved which allow to perform export and import. You can contact their support if you want more details about the capabilities of handling a eShop CSV file.
You can also see to gave us a sample of that CSV so we can take a look and tell you if the work to make it compatible would be easy or not.
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.