I would try to see if anyone can ship you full pineapples of the variety you want; it seems easier to buy the pineapple and use the tops to plant rather than trying to find someone to sell you a top or slip around here.

My favorite place for white pineapple is Olana Farms on Kauai but not sure if they'll ship to you: http://www.olanafarm.com Worth a shot to ask!