I'd like to add engrave services to product page, and modify the price depending on the number of characters.
The characters will be inserted by the customer into a specific field.
There will be specific prices, depending on the material (ex. woof, plastic, metal).
In any case the number of characters * (specific price) will be added to the product price.
I need the option to select in BO the products for which the service is available.
Also from BO possibility to change the per character price.