I would prefer not to make an actual purchase on the site in order to find out what exactly the output file looks like. Is it possible to do a test run and have FPD export a design file on the back end just to see what it looks like?
You can test our plugin on demo.fancyproductdesigner.com
I see how to make a demo site, but how do I submit purchases to test the size and settings for the output file that I'll receive?
You can go to the frontend, order the product and go to WooCommerce -> orders and view your order.