I didn't mention the method of mailing, but once you've traded with the RR, please mail it out Priority Mail so there will be no delay in the next person receiving it.

Also, I can't require you to purchase Delivery Confirmation on the RR, but if it gets lost after you send it and before it gets to the next participant, you'll be held responsible for replacing the cards in it. Delivery confirmation is an inexpensive way to protect yourself. Also, insurance on the package would only be a couple of dollars, so you may want to consider that as well.

Thanks,
Will