Tom, it's my understanding that price is for the whole kit, but I ain't doing (and making folks pay for) separate shipping for a plastic bottle that most of us have too many of anyway. I'm gonna strip the goodies out of the plastic case, pad them, and stuff them in the mould box. After the deal is done, anyone who wants the plastic boxes can have some for the shipping.
If it were solely up to me, I'd strip the blocks out of their box, wrap them in bubble wrap and stuff them in a flat rate priority envelope, too, but we've been through this before and some folks want the box which won't fit in the flat rate envelope.