Note: I have been trying to stay out of this discussion since I was not involved. However, I want to give my opinion without pointing fingers at anyone involved in this group buy.
After reading all the posts, I don't know who has or hasn't received their stuff. I don't know who has whose money. But if you think you are a victim of fraud, I would contact your local police department, the police department in which the the person committing fraud resides, and also the district attorney's office(s). The person committing fraud is more likely to cough up the money right now than deal with legal fees and possible criminal record. And as Lou stated, file a PayPal claim and possibly a claim with your credit card.
I am a strong believer in full disclosure when you do a group buy. Several people have been bitten in the past for not disclosing their personal gain from such group buys. If someone does a group buy for the mail purpose of personal gain, then they are responsible for the risk associated with the group buy. If I go into a car dealership and purchase a car, but the manufacturer cannot deliver - I expect the dealership to refund me in full - even if they had already paid the manufacturer. Then the dealer can go after the manufacturer for a full refund. The consumer should not have to deal with the manufacturer.