Hi all - if you are a member of AHS it is $220 (booked before 1/31/10, I think), and that covers all the food, gloves, camp provisioning, etc...basically everything except travel cost.
On some AHS outings the fee pays for pack animals, cook, etc. but Whitney is a bit more rustic. Can't say for sure what the leaders of this one will provide, but I count on nothing except food.
If you consider the ever-increasing tax rates, assume 40%, that means your per-day food cost is (220*(1-.4))/7 = ~ $19, and you're on the mountain for a week for free.
The people are great and the work has it's own rewards - I learned a lot before and expect the same this time.