We do not have a board rule at this site on someone shipping first. In fact, we can't tell anyone what to do with their personal property.
However, it is an unwritten rule or board protocol that we would like in good faith a member without any feedback to ship first to a GTG board member. But, that doesn't mean a member has to do this ..
Strong suggestion would be to use a middleman if an agreement on shipping first can't be reached. Its up to any member to protect themselves ... including a member without feedback. We can't force anyone to do anything !