If you want to go to a printing factory for printing, it is very uneconomical.

1. Printing a page requires 4 PS editions (C\M\Y\K). If it is a 52-format 4-color offset press, put 4 pages on one page, which means that the abstract of your 900-page book is 900*4/4=900 PS version.

2. Printing labor cost. At present, the printing labor cost of the printing factory is basically within 1 0,000 sheets. According to the minimum labor cost of 1 0,000 sheets, the labor cost of your 225 PS editions is also quite scary.

3. paper. The printing factory didn't just give you a piece of paper to print. Because it is a 4-color overprinter, it needs to be adjusted (professionally called overprinter). The number of papers must be there, at least about 20. In other words, printing 225 sets requires at least 225*( 1+20)=4725 sheets of paper.

4. There are also ink costs, pre-press film making, post-press cutting, binding and cover packaging.

Therefore, I suggest you don't go to the printing house to get it. Hey hey! !

Go to the copy shop to print. After printing, go to any printing factory with a post-press workshop and see the workers binding books for the binding machine. Or if you can't find a printing factory, you can only be hacked by the owner of the copy shop. How much black depends on the extent to which the boss is black-hearted