Hello,
Maybe, I have an easier solution without code customization (on core file html & php), follow my step by step :
First in Main HikaShop Configuration :
=> In Main tab, and Product part, define "Display 'add to cart' button for free products" on No
=> In Display tab, in Product options part, "Display a contact button on the product page" define For all products.
Second step, add some custom css code on your frontend file css (see
this tutorial
to see how to process)
div.hikashop_product_page #hikashop_product_contact_main {
display: none;
}
The point of this css is to don't display your Contact button on all product page, except on the required product page, that's will be manage with this following code :
div#hikashop_product_PRODUCT_NAME_page #hikashop_product_contact_main {
display: block;
}
Note than you can as well
modify your language file to have a better translation than "
Contact us for more information", see
this tutorial
.
Hope this will fit your needs
Regards