Hello,
For this you can create a Warehouse only for your product that have to use your shipping fee, follow me step by step :
- In Main HikaShop configuration, go to System dropdown => Warehouse
- Create a Warehouse by clicking on New
- Add to this Warehouse to your required product in their Configuration page in the RESTRICTIONS AND DIMENSIONS part
- Then create a
new shipping method with your shipping fee and associated it with the same
Warehouse
Then, when a customer will process a checkout if he had add one of the product from the Warehouse, the required shipping method will be displayed.
Hope this will fit your needs.
Regards