Not that I'm aware. The prices for a cruise seem to be all over the place. I have taken cruises on DCL where I have been quoted one price by DVC (using some points), another by DCL and still another by a travel agent.
I don't know WHY but I actually think the cash ressies thru DVC are more than thru DCL. I tried to get a cash price for my DS thru DVC & it was a couple hundred more than how it priced out on the DCL website...
BUT, I'm excited 'cuz we just booked a 4 n cruise w/ our DVC points for NEXT summer - now if only they would release the point charts! We were able to snag a SPH cabin & based on the '07 charts I think we'll have enough points to cover all 3 of us! (I left just a few to spare in case the points go up tho...) Then we booked the 3 n b2b cruise immed. after the 4 n on a cash ressie thru Dreams Unlimited and were able to keep the same cabin - which means we don't have to pack up & leave inbetween!