Well, they didn't look as awesome as I would have liked and my poor photo printer was sucking up the ink like crazy. So, I decided to take a piece of 12"x12" paper that I'd been hanging onto for eternity and cut it into nine 4" squares. The result turned out perfect for filling out a wall in the master bedroom:
Lee's a little freaked out that I used tacks to to put the pictures up, but I find that since the frames are so lightweight, it isn't a problem at all. Plus, I was able to easily reposition the tacks to make sure that the frames were perfectly square with each other.
Time: roughly 10 minutes (most of the time was spent positioning the frames on the wall)
Tacks: negligible. Nine tacks out of a package of hundreds that I purchased about 10 years ago. I suppose you could get all fancy and actually put picture hangers for all nine. That would probably run a buck or two depending on where you purchased them.
Frames: $7.50 (for all nine!)
Paper: $0.33 (On sale at Joann's a couple years ago)
I also scooped up this super-sweet canvas print in their 30% off sale: