Some publishers like 'Best Buys' had the CD version in retail stores (after JJ2's release) for around $10 or even less, depending on the store. I picked up a copy of that around 2002 because I only had the floppy version (thus no bonus episodes). I do remember some minor differences in the CD version though, like this 'airboard glitch' on the Medivo level, which didn't happen in the floppy version. I also remember the Tubelectric 1 level had a slightly different ending part on the floppy version.

Still, can't say $25 is a bad price, especially for the 'original of the originals' Epic CD version.