Thanks for all the tips. Here's what I ended up doing....
When Staples told me it would be $.50 per page to scan the document in at their store, I knew that wouldn't work.
I bought 6 16 MB flash drives on sale for $6 each (they were on sale because they said "back to school" on the packaging).
I took the binding of the journal apart, but my scanner wouldn't let me scan odd size pages. It would, however, let me copy the pages. So I copied them carefully, one month at a time. Then once that was done I scanned them using the document feeder - again one month at a time. I made 6 flash drives. Since I already had one copy printed up, I bound up 2 months with a ribbon binding, and attached the flash drive to the ribbon. Either my family can share the printed copies around or read the flash drives.
Total cost - $53 for the flash drives, $0 for leftover ribbon, $0 for leftover scrapbook paper, and $20 for a print cartridge/paper. $12 something each, which wasn't totally frugal, but not a terrible deal either. I hope they like it, and I guess they can reuse the flash drive later after downloading the journal to their main computer.
I will say it felt like a lot of hard work.