Boy, I hate that I'm replying and not answering your question (a pet peeve of mine). But I did inquire about buying a whole cake from DTD when they had the little restaurant/bakery/candy place in the marketplace years ago (was part food, part kitchen stuff) - hoping for a good deal price-wise buying the whole cake. The CM told me the price would be however many slices they normally cut times their per slice price - I think it was going to be like $40-$50 (I think they had whole cakes uncut in the back). The cake was good, but not that good.
Just sharing a similar inquiry.