Production File - Quantity as Output

Is there a way to automatically create multiple pdf's of the same job (when the quantity is more than 1) so that the correct total number of pdfs required appear in the final production file?

A- Yes there is. In the Product Settings under Advance there is a setting Quantity as Output. Click on the checkbox. This is available for Block products. 

This will also work with set sizes. If you sell business cards in sets of 250 (using the set size of 250 in the main product settings) then if the customer orders 2 sets (quantity of 2) this will generate a 2 page pdf, duplicating the first page.