Allears lists 8 and 9 day tickets but if you go to the Disney website they only let you order 7 and 10 day tickets, but a park hopper, no pluses with 14 day expiration is only $9 more (I think) for the 10 day than the 7.
We only wanted 9 days, but the cost shown on Allears was only $2 something more for 10 than 9 so we just did 10.
I'd probably spend more on long distance phone charges to call direct and get the 9 day ticket.