Melbournes do seem to be a bit harder to find, at least when I'm looking. I've seen a couple, but they were both larger than what you're looking for. The most recent was a 29.
If I didn't think I needed the cab-over space for the extra bed (our '00 Designer 2730 Class C has the entertainment center/pull-out bunk option), I could see us in a Melbourne. They are certainly very beautiful and comfortable.
PUP: 1996 Eagle 10UD
TV: 2003 Ford F-150 XLT SuperCab
Proud former owner of a 2000 Designer 2730W MH