I just looked at two 7-day Med cruises to make some comparisons (using Navigator, since she's in the Med more often):
June 14, 2008, MC-Rome, $4,695
June 06, 2009, Rome-Athens, $5,150
Aug 02, 2008, Piraeus-MC, $4,995
July 31, 2009, Venice-MC,$5,495
Definitely higher, but not hugely so. Comparing 7-day baltics routes on Voyager in August, I see fares from:
2008: $5795
2009: $6395
Interesting, not devastating, but it's creeping up, that's for sure.