When printing in the field, you should generally print a real PS version on the field. Here's a way to save money for your reference: Pick a scrap PS version (PS version requirements: layout smooth, can not have bumps and damage phenomenon), use the back of the version, wake up not only water on the ink for printing. The solid products printed using this method are not only of good quality but also full of flowers on the ground.
This accumulation can save a lot of PS board plate consumption.
Source: Design - Printing Network