In the past I have frequently needed to merge several existing PDF's together. The idea is this: we have a list of objects Foo in a grid that is available to an

In the past I have frequently needed to merge several existing PDF's together. The idea is this: we have a list of objects Foo in a grid that is available to an end user. Each Foo item has a PDF that can be printed - some of our users really like to just look at the paper print out of everything. So we created a "bulk print" option. They tick a bunch of checkboxes for the Foo items, then click the Print button. Internally we merge all those PDF's together and send one print job to the printer's queue. We used DevExpress [1] to accomplish this, and it worked very well. The only problem: it's expensive. Multi-billion dollar companies don't mind paying the price tag, but smaller shops sometimes think twice. If a free or near-free alternative existed, that would be fantastic. [1]: https://github.com/DevExpress-Examples/how-to-merge-documents-into-a-single-pdf-t114298/blob/17.1.3%2B/CS/PdfMergeExample/Program.cs https://github.com/DevExpress-Examples/how-to-merge-document...