I'm really sorry to hear about your loss. From my own view, it seems like it was the responsibility of the store not to let you take the snake home until it was safe. It sounds like they got caught up with the prospect of a sale.
1.1 ball pythons (Huxley and Marla)
~"Interestingly enough, the only thing the bowl of petunias thought was, 'Oh no, not again.'" --Douglas Adams~
* Mollie *