I need to add a custom option to a simple product which will be number of pages. This needs to get multiplied rather than added to other fields.
- Black and white (€0.03) or Colour (€0.15)
- Paper quality: Say €0.02
After the user chooses black and white and the paper quality, this adds up to (€0.03+ €0.02) €0.05 which needs to be multiplied by the number of pages (another custom field) that the document being uploaded (in another custom field) contains.
Is this possible in any way?