I think I've decided that there's no "set" price for the dining plans. That is to say that the price changes based upon the number of people or the number of days or SOMETHING.
This is why I say this...
I've run the numbers a gazillion times with different variables. The constants have been the resort and the park hopper tickets and the number of days. I figure out how much the combined cost of the resort and the park hopper tickets are, and then add the DxDP in. Then, I take the total package price and subtract the price I was given for the resort and tickets, and that gives me my grand total for the DxDP.
From there, I've done a few different things. If I've entered more than one adult, then I divide the dining plan total by the number of adults. But I've also plugged in just one guest and I get something like $78.99 (tax included) for a single guest on the Dx Dining plan. But, if I plan for 2 or more guests on the DxDP, the price changes. Just when I think I have it figured out, I run my total numbers and find out that my numbers come out higher than the total cost Disney quotes by about $75 (for 10 days).
So here's what I think: I think the reason that the CM's won't give you a definitive answer on how much the dining plans cost per person per day is because there IS NO definitive answer. That is to say that the price changes based upon the number of people. It looks like the more people you have, the slightly better deal you get.
For those math/science geeks, I've kept several constants:
1. Number of days
2. Resort
3. Type of Park Tickets
4. Type of Dining Plan
The only variable has been the number of people on the DxDP.
I think for planning purposes, then, $78.99 (tax included) is a good guide for guessing how much the DxDP will cost per adult, and then you can almost plan to come out a little bit lower than that.
I'd love to hear your thoughts, experiences or feedback on this...