I've seen links to scanned images of PGM on the internet. But, you know, when you want to copy-and-paste some Greek text from PGM for a paper, well, that's not exactly possible with scanned PDF images. So, I came upon this link one day that had PDFs with actual Greek text rather than scanned images of PGM.
Again, someone else may have already found this link. If so, please delete. If not, well, save this if you wish. I thought it was like discovering a treasure.

http://khazarzar.skeptik.net/pgm/PG_Migne/