Did you remove insurance and transfers from the DCL quote? I booked a cat. 11, and DU's prices were the same as DCL's. The difference is that DCL's prices will go up, and I think DU's are guaranteed for awhile.Via the DU link I get $1,847.84 for 2 people in a Cat6 for the podcast cruise.
Via the DCL site, I get $2,123.84 .
**Just checked DCL, and the $2123.84 price includes transfers ($138) and insurance ($138).