Woocommerce: price per page

Hello,

I’m creating an online shop for a local print shop with Woocommerce.
For bigger product like canvas everything works very well but I also want to include printing of documents and papers with a price based per page.

If I would use the standard variable product, this would mean that every number of pages a document can have, would be a different variation. This would leave me with thousands of variations because the document can be 1 page until 1000 pages.

Is there any plugin or coding to do this in a better and quicker way?

Thanks,
Glen