This is very helpful. However, if a 19 day ump cost the same as a 13 day ump and this was $475.97 less the DVC 10% discount, wouldn't the UMP still be cheaper?
Trouble is, I can't see anywhere on the Disney site which lets me work out the cost of a 19 day ump.
Please can you tell me how you were able to know the cost of a 12 day ump.
No the UMP go up each day - they don't stay the same price for unlimited days. I think it is around $20 to $15 per day - you can call CRo and ask what the price would be. Since DVC sells them you should be able to call MS and ask them also.
I think that the tickets price listed here assume that anyone who wants one pass 12 days will go get the PAP and therefore they won't need the price. Does that make sense?
Break even will be a little longer than the chart indicates, because DVC members get a 10% discount on UPH ticket media. A PAP gives you all the same admission priviledges as an UPH, but for an entire year. A PAP is essentially an UPH good for 365 days. If you really are planning to be in a park 19 days, the PAP is the most economical pass for you. I don't think Disney even sells UPH for more than 12 nights/13 days for that reason. The chart on the link will give you details on prices.
There are also other perks/benefits to owning an AP or PAP. Here's a link that describes those "extra" benefits: