Late afternoon bump. People are already starting to send out their bricks. Apparently, USPS red priority pre-paid shipping boxes from the post office work good. The envelopes work too, but you may need additional wrapping to prevent it from tearing open during shippment.
Average costs reported so far are between $4 on up to $12 depending on size of brick and choice of postage. Priority is supposedly the best way to ensure it gets there.