I think you will find B&H won't ship it. I got mine from Rainier photo - good service so far - much smaller operation. You can find them easily on the web but you have to call in to place an order. Also Calumet has put it back in their inventory.
The P3.5 kit is the new 5 liter small batch kit but is not the same user-friendly chemistry as the old P30. P30 is no longer made. The P3.5 is exactly the same chemistry as P3 - good stuff - but temperature control is a must with this stuff. Don't give up on it - I still think nothing can beat a good Ilfochrome!