I know this is a new thing, and may not be for everyone. In my experience, nearly every box pass I have done has cost $11-$13 to ship. Shipping twice for a small flat-rate USPS priority with DC# is $10.70...not a lot of difference, but cheaper than almost every pass I have ever shipped.
My major concern is a member not sending what they identify as their PUTS...If that happens things get complicated. I have confidence in my BOTL that this won't happen. In fact, rarely is there ever a problem with the right cigars not being PUT in a normal pass...sometimes a cigar isn't sent by accident, and that could happen here. I think the biggest issue would be if a member didn't send ANY of their PUTS...If there is a wrong put, it can be resolved with a PM and the member sending the cigar, or subbing with another cigar (if the next member in line who TOOK that cigar agrees).
I think this will work and I'm willing to be the lab rat...