I have looked at some Chancery records, so can share my frustrations with you. As I understand it (worth reading Amanda Bevan, Tracing YOur Ancestors in the National Archives on this) the paperwork was not filed in a way that was designed to help the family researcher 150 years or more later! Some of the documents I have looked at are enormous, handwritten on parchment fully one metre wide. I would guess that there would be high costs in getting them copied. Others, from somewhere in the middle of the 19th century, are on paper closer to A4 size and are printed (I think that's because that was the best way of getting multiple copies, rather than laboriously hand-copying). Now the Bill, which launched the proceedings, seems to have been filed separately from Answers from the defendant - and other documents are filed separately again. Tracing all of a particular suit isn't easy and is likely to be time-consuming.
That said, having found one suit via the catalogue I was able to get a good understanding of it by reading only the Bill, the plaintiffs' Affidavits, and the defendants' Answers - something over 100 pages!
I've attached some images so that you can see the sort of documents I've been looking at.
